My Allergy to Melted or Cooked Cheese

Does cooked cheese give you diarrhea or make your throw up?
Does cooked cheese give you diarrhea or make your throw up? | Source

Diarrhea, an Upset Stomach, or Vomiting after Eating Cooked Cheese?

So here we are going to look at the issue of the melted cheese allergy. I have been allergic to melted or cooked cheese since I was a child. My father has the same problem. So I have been searching for answers: Can someone have a melted cheese allergy but be fine with normal, uncooked cheese? What is the difference between melted cheese and standard cheese? In this article, we take a look at the answers to these questions.

So if you have come here looking for answers as to why you are allergic to melted cheese, hopefully we can help you. Or maybe you know the reason and could shed some light on the matter—in that case, please post it in the comments.

First of all, let’s take a look at exactly what my problem is.

My History with Melted Cheese

I first became aware I had an issue with cooked cheese when I was around the age of five. I had attended a friend's party, and we all ate pizza. This was my first experience of pizza, and I do recall enjoying it. However, an hour later, it had all come back up. At the time, we were unsure what had caused me to be sick, but as time passed , it became clear that I was allergic to melted cheese. My father had the same problem—he would feel sick if he ate any cheese that had been cooked.

So let me make it clear exactly what I mean by cooked cheese. I am fine with all other dairy products. I can eat yogurt, drink milk, and eat normal cheese to my heart's content. But soon as it melts, something happens to the cheese, and it makes me vomit. A big chunk of cheddar will be fine, but slice it up and pop it under the grill until it melts, and you can guarantee my stomach won’t be able to deal with it.

Over the years, I have come in for some pretty strong abuse from friends who claim it is all in my head. The are convinced I can’t actually be allergic and it is just something I have made up.

A few years ago, some of my friends put this theory to the test. I visited their house for a meal and for starters we had stuffed peppers. The peppers had several tasty ingredients, one of which was cooked cheese. As there was only a small amount, and it was hidden away in the peppers, my friends assumed I would have no reaction, thus proving them right. I ate the peppers and commented how tasty they were. An hour later, I was hanging over the toilet, and my friends were apologising. This proved that the cheese allergy isn't psychosomatic.

At family dinners, there will inevitably be cooked cheese.
At family dinners, there will inevitably be cooked cheese. | Source

Searching for Answers

In my past, this issue has come up time and time again. When I go out for a meal or visit a friend's for dinner, the issue of cooked cheese will inevitably arise. The fact is there are so many meals that contained cooked cheese that sooner or later someone is going to offer it to you. So I am often asked, "How can you be allergic to melted cheese and not normal cheese?" I hate being asked that question as I really don’t have an answer. I have spent hours searching online for answers, and I have found other people that suffer from the same problem, but as of yet, I have had no conclusive answers as to what the problem may be.

Usually, when it comes to medical problems, the Internet is a wealth of knowledge. But for some reason, there are very few answers to this particular question. One thing I have noticed is that there are plenty of theories out there. I have also had quite a few people offer their own theories as to why I have a melted cheese allergy. So now I want to tell you a few of the theories that people have come up with over the years.

Possible Theories

The first one is one that I have little faith in. It has to do with lactose intolerance. I have seen many so-called professionals stick their noses out on forums and say, "Clearly you are lactose intolerant." However, if that were the case, surely I would have a problem with other dairy products. The fact is that every other dairy product I consume causes me no problems. I can eat masses of cheese and drink pints of milk and be just fine. So for me personally, I would say the theory of being lactose intolerant does not hold water.

Another theory is that the consistency of the cheese makes me sick. This is another one I have an issue with. Admittedly, I find melted cheese dribbling out of a grilled cheese unappealing since I know what it does to me. But cheese that has been cooked, but is no longer melted—for example, on cold pizza—has the same effect. What's more, last year, I made the mistake of eating broccoli and Stilton soup. I was sick once again, even though the consistency of the cheese was a liquid, not the gooey texture you get in a grilled cheese. So again, as far as I am concerned, this theory falls flat on its face.

One theory that I do subscribe to is one that I actually heard from a physics teacher. He was present at a dinner party I attended and the argument once again came up. To my surprise, he took my side in the argument and said that there is a chemical reaction in the cheese when it melts. The fats in the cheese separate. To be honest, a lot of what he said went over my head, but it involved trans fats and the way the body digests them. He also mentioned the fact that heating cheese can kill off the enzymes that help in digestion, so melted cheese can sometimes be harder to digest. This seems like a fair point, and it could explain the problem.

Not Alone with My Allergy

One thing that I have learnt while researching this whole problem is that I am not alone in my melted cheese allergy. The fact is that there are quite a few people out there who have the same problem. Although this is something that can be a nuisance, it is not the sort of issue that is going to be life threatening. That is probably one of the reasons why there is so little information about the allergy anywhere online.

If you know of anyone who has this allergic reaction or maybe you yourself struggle to digest melted cheese, feel free to post a comment on the bottom of the page. The same goes if actually have a conclusive answer to why it happens and have stumbled across this page. Either way, hopefully this article will have given you some clues as to why some people, including myself, are allergic to melted cheese.

Since writing this article, I have been amazed at how many people have gotten in contact with me. It turns out there are more people suffering from the problem of melted cheese intolerance than I first thought. As you can see from the comments below lots of people have the same reaction as I do to cooked cheese and many people have other similar problems to various other forms of dairy. It looks as though this is an issue that is now affecting more people than I had thought.

Comments 190 comments

Anditwedz 3 days ago

I am gluten free, 4 years now but suffered for 15 before I realised what it was anyway I have now found out that cheese is the culprit that makes me feel exhausted. I love cheese and used to eat it often and the next day felt drugged all day till late evening when I,would come alive again. This again went on years and I was diagnosed with 'it's all in your head' to stress, to anxiety, to chronic fatigue etc. I have recently started yet another food diary having conquered the gluten issue and nailed it to cheese. Does cheese make anyone else fatigued. Not sure if it's melted or hard cheese as didn't realise it could be different but not sure I what to try it as I hate the feeling the next day. I literally walk round like a zombie with no energy and could sleep 24 hours.

On another note I have found that artificial fragrances in body care products also cause this fatigue. Again years of trial and error.

Think I'm faulty as no one else in my family suffers this.



tony 8 days ago

I have had this since about 5 years old. I was told it was a enzyme that was caused by heating cheese and was still present when it cooled. Like you i have had 64 years of being told i am silly. I also get similar symptons. When i eat cooked carrot but i am fine on raw carrot but these are easier to avoid than cooked cheese.

Sharon 11 days ago

Hi' over the years I could never work out why I felt sick after eating cooked cheese especially when in an omelet it makes me feel really sick I couldn't work out why? After searching my issue (realisation today and typing this whilst feeling sick)I came across your post "phew" so I'm not alone I see! I know not to cook cheese again! I find it an odd allergy but if my body rejects it then I guess It can't be that odd (-:

Penny Kirkbride 4 weeks ago

i have a similar issue - but not with cheese or any dairy. I have the same reaction with ice & water. I can drink water galore.... if it has ice cubes in it and they melt - i get the severe stomach cramps and diarrhea. my husband says i am completely nuts!!!!! anyone with this issue too??

Jessy 5 weeks ago

I too share the same affliction about melted cheese mine only surfaced in the past 2 years though. I can have all sorts of dairy products and uncooked cheese. If I order pizza I order it with no chess using the marinara sauce and my preferred toppings works just fine for me but I love marinara sauce so it's never been a problem.

Nadine 6 weeks ago

Hi I think the problem comes from eating cooked pasteurized cows' milk cheese You may find goat and sheep cheeses easier, or else using unpasteurized cows' milk cheeses only (eg parmigiano reggiano). The theory is that pasteurization makes the protein fibres in milk more rubber band like and the gut no longer recognizes it as food and cannot cope with digesting it. Works for me and I have switched to only small quantities of goat or sheep or unpasteurized cheeses and have had no further issues.

Jhosein 7 weeks ago

Hi I'm the exact opposite pizza is fine no problem yet if I eat a piece of cheese I feel so nauseated, diarrhea, hives, plugged nose and sore throat and I think maybe swollen throat, and bloated swollen around belly button, keep feeling like I'm going to throw up. I will start feeling it within hour of eating it and it lasts for a good 24 hours or more! I've been told dairy intolerant but can have butter. The other day I was depressed and ordered a gluten free pizza from dominos...I love pizza but had given it up and I was fine!! Sooo good I ordered one a couple of days later and fine!!! Ohhhhhhh maybe I wasn't dairy intolerant after all are a couple pieces of cheese last night and omg sooo sick I found this article! It's so not worth it. No ice cream, milk or cheese for me but melted cheese yum bring it on!

David Hughes 7 weeks ago

I used to be OK with cooked cheese, though I never really liked it, but 21 years ago I had to have a major abdominal operation which involved a colostomy.Since then I cannot eat even the tiniest amount of cooked cheese, though "ordinary" cheese is fine. I believe the whole thing is down to the ability of the gut to process cheese in a cooked form and subscribe to the idea that cooking cheese alters its chemistry. I find I have to be very strict with restaurants and friends and say "NO COOKED CHEESE!!" It helps!

ChristenLB 7 weeks ago

My daughter has been having nausea issues for 2 months now and we are waiting on a GI appt but trying to figure it out in the meantime. I have a question for you. Can you eat cooked cheese if you take a Lactaid with it? We had Lasagna for supper and she took a Lactaid and still got nauseated. She does not throw up just gets varying degrees of nauseated. Do eggs bother you at all?

Taylor 2 months ago


I stumbled on your post because I was frantically searching for answers on the internet. I happened to eat pizza three times in the last month and each time I became ill. I wanted to test my theory this evening and bought stuffed crust pizza from Pizza Hut and ate 3 slices. About 2 hours later I had a violent episode of vomiting and severe abdominal cramping. Once the pizza was out I felt fine. I am now worried that I have somehow developed a problem with cheese specifically as I eat ice cream a lot and feel none of the same symptoms. I've never been lactose intolerant or had any other food allergy. I've also never had any digestive issues. I am concerned but I don't know if my doctor will think that I am crazy. At least your post has made me realize I'm not alone.

Ali 2 months ago

I just discovered after months of cramps and urgent trips to the bathroom that this is an allergy for me as well. It's refreshing to know there are so many others out there that don't get to indulge in the melty goodness that is cheese in lasagna, on a pizza or in fettuccini alfredo. I have a yogurt every morning and a glass of milk every night with dinner with no side effects. I recently had ate lasagna and before even finishing my piece I was throwing it right back up. Not thinking it could be the cheese, I went back and finished the slice later on with the same outcome. The next day I had fattuccini alfredo at my parents house and was not able to leave for a few hours before I knew I could be away from a bathroom long enough to get myself home. So unfortunate melted cheese tastes soo good and is in almost all of my favorite meals. But avoiding it will leave me feeling so much better.

Brittd 2 months ago

I have noticed this intolerance in the last few years. For me the results are a little more explosive, and a little further south. The day after I eat melted cheese (pizza, lasagne, etc) I am gripped with urgency and can't be too far from a toilet for a good few hours. I'd love to know why, because some of my best foods are covered in melted cheese! Nowadays I just wait until I have a day off and then binge the night before. Although the next day is unpleasant I can't bring myself to give it up!

HJWELLS 2 months ago

I stopped eating cheese after being told it caused a blockage. The valve btween my large and small intestine blocks and it takes about 3 days to massage/release build up of non digested foods that feed backwards. Cannot say if it is specifically cooked cheese. There is something in the processing that causes this reaction. It is easier to live NO Cheese please.

Nicole 2 months ago

Yup, I've had the same issue since I was a kid. I used to be completely intolerant, but now I can tolerate a little bit of it, sometimes (and honestly I can't figure out why on occasion a small amount will go over OK with my stomach, while other times I will instantly be in the bathroom after a few bites of pizza). My doctor suspected that I have a problem digesting fat, but I am fine with olive oil, avocados, and nuts. I agree with the physicist - it probably has to do with trans fats or whatever happens when cheese specifically melts. I cannot have other greasy foods either.

Glad to not be alone! People think I'm crazy too :/.

Phil/MN 2 months ago

Melted cheddar causes bloating and stomach irritation almost immediately. I also seem to have elevated blood pressure and a slight degree of memory problems for a short time. I had a CT scan done and there is no sign of a TIA. Has anyone had either of these symptoms?

Michelle lovaas 3 months ago

Lasagna has always been my specialty dinner. I have made and ate it a lot in my 40 years. For 2 months now even one bite and within minutes I'm violently vomiting (husbands terms). This also happens with enchiladas and tater tot casserole. The only thing they have in common is melted cheese and ground beef. I know ground beef doesn't bother me, as we eat a lot of it and I have no problems. Therefore it has to be the cheese. What confuses me is the fact that I've ate tons and tons of meals with melted cheese in my life and this just started happening 2 months ago. Also I can still eat pizza cold or hot and I have no reaction. I'm frustrated because this cuts out a HUGE part of my diet. So far I'm not finding any explanation as to how or why it started all of a sudden aft 40 years. My husband says I should go see my doctor but is there really anything she can tell me or do for it?

Jodi 3 months ago

Melted cheese, chowders, ice cream (sometimes), ... so tired of cutting foods out of my diet. The only thing I can eat is processed food and that's not good for you. Looking for some suggestions because I am starving for some normalcy.

Pat 3 months ago

I have the same problem, specifically certain brands or types of mozarella (e.g. Buffalo mozerella). I had a tick-bite when I was 9 yo. This led to beef-allergy. There are enzymes that they use to make cheese (rennet) that come from cows.

So while I'm not allergic to milk, I get sick from certain cheeses (i.e. Swiss, mild cheddar). Heating the enzymes during the cooking process may cause the proteins to denature and get better processed and presented to the immune system, causing a stronger immune reaction to cooked cheese than to raw cheese. Right before I react to cheese I get a pinching pain on my left side (a symptom of IBS). I tried a sulfa-drug to treat the IBS but it had no effect.

I've tried taking anti-histamines like Benadryl and Claritin, but they do little to halt the diarrhea even if I take them an hour before eating.

E in T.O 4 months ago

I have the same issue with melted cheese. If the cheese cools again then I am usually okay -I'll let pizza cool a bit before having a slice.

I've found that mozzarella isn't too bad, when it melts it doesn't get really oily like cheddar. It seems to me that the separation of the oily stuff from the cheese is what gives me problems.

I've had some success taking a digestive enzyme like Digest More.

Cassii 5 months ago

Have you tried drinking warm milk to see its effect? Or any other dairy foods?

Jake 5 months ago

Same here! I'm happy to hear others go through it too so I'm not just the crazy person who doesn't like something that's delicious. Also same, I drink lots of milk and eat blocks of cheese, but when it's cooked I know it will cause some serious stomach pain every time.

Tommy 5 months ago

I've had the same problem for a few years. With pizza I can't eat it hot but the next day when it's cold it's perfect or if I have cheese on toast that doesn't affect me

wendy 5 months ago

I have just discovered that it's melted cheese that gives me severe stomach cramps and diahorea. A friend at work also suffers with this. Hope we can all find more answers soon

Meg 6 months ago

I'm 21 years old and I just started noticing myself have this allergy maybe my senior year of high school. It's with everything dairy ONLY when it's warmed or cooked. But when it's cold I'm completely fine and my tummy is happy. When it's cooked or warmed my stomach gets upset, and I get nauseous. I've only thrown up from it maybe 2 or 3 times out of the 20 or so times I've eaten it.

Kathy 7 months ago

OMG.. I have the same thing too! Thanks so much for sharing. I can drink kefir, eat yogurt, drink milk tea, even eat some raw cheese, but whenever cheese is grilled/cooked like in pizza, I develop diarrhea, a lot of gas and bloating, with itchy hives. I actually have this reaction to other fats (fried or very oily foods - again only when fats are cooked) as well.

7 months ago

I have the same issue with cooked cream. Melted cheese fine, uncooked cream fine. Tried making stroganoff with the fat free cream and I have absolutely no problem with that so must be the fat...

Anne 8 months ago

I have had this problem for many years. Oddly, I can make a dish with melted cheese in and eat half of it and be ill, then eat the other half the next day and be fine, or vice versa. I get acute diarrhoea though (25 minutes is my record from eating the cheese to saying goodbye to it at the other end) rather than vomiting, although I have vomited after eating cooked organic cheddar.

T.R 8 months ago

Omg I thought I was going crazy thinking that I had a "melted cheese" problem, but now I know that I'm not the only one. My problem started around 3 months ago when I had stuffed peppers that I cooked myself for dinner. At 2 am I woke up with the WORSE pain I've ever had (I have 2 kids and not even the birthing pain can be compared) in the right side of my stomach, I thought that my appendix or gallbladder did burst because I couldn't even stand up. When I finally stood up with my husband's help to go to the hospital I felt the urge to throw up, I barely made it to the bathroom. After having the most horrible projectile vomiting for a few minutes (till my stomach was empty) the pain just went away, but my stomach didn't feel good for the next few days. I was very surprised and thought that maybe I had food poisoning (bizarre, cause no one else in the house got it but me). The next time was around 3 weeks after the first incident when I ate one of my favorite dishes, broiled broccoli with melted cheese on top, but this time the pain wasn't as intense as the first time since I decided to force myself to vomit before it got worse. After vomiting I felt much better and kind of made the connection between the pain after eating melted cheese. Well last night I had a slice of pizza and a few potato cheese balls, and once again it happened, not as intense, but I figured out that if I walk/fast walk around the house (like a maniac) for around 30 minutes it makes me feel better, maybe the fact that the sympathetic takes over the parasympathetic nervous system helps. It's frustrating knowing that I'm not going to be able to eat melted cheese again because it's delicious, buy at least now I know what causes it so I can avoid it. Thanks for the posting, it was very helpful, and because of it I don't feel alone with this problem anymore.

lorraine 8 months ago

omg! I just came across this article while trying to figure out why my daughter vomits violently after eating Pizza! She drinks milk and eats raw cheese no problem. So I've been going crazy trying to understand! The lactose theory just does not apply, so im so happy to hear your possible theory. Sucks cause even though she vomits every time she loves pizza still.

Ian 8 months ago

Hi, thanks for starting this.

I've just worked out i have the same intolerence with melted cheese (49yo), maybe been happening for a year or two.

So still trying to work out the extent of it, not sure if completetly melted cheese ie. in a sauce etc. has the same effect.

At the moment it's just melted hard cheese, chedder etc. but i may be wrong and it's all heated cheese.

I'll let you know.

cazza 8 months ago

over the past two years my problem with melted/cooked cheese has escalated and i need the toilet sometimes within ten minutes so eating out involves careful choices. reading this article has made me understand why cheese & wine is fine but cheese on toast is a 'no go'. oh well less calories i suppose should help in the long run ( pardon the pun)!

j_saal 9 months ago

I have found my people! This has started happening to me just recently. Suddenly warm or melted soft cheeses do not agree with me (goat cheese, brie...) but mozzarella is fine.

Londongal 9 months ago

I've just looked this up, having yet again having had a violent attack of diarrhoea this morning! I've always enjoyed dairy products of all kinds, including cooked cheese, which I eat fairly often as I try to keep down the amount of meat I consume. However, in the past year or two (I'm 71) I've been having occasional attacks of abdominal pain and galloping diarrhoea in the morning.

As a former nurse, I've tried to take a scientific approach to this, keeping a food journal... and yes, it always happens the morning after eating cooked cheese! It's not down to the type of cheese I use for cooking either. I use the standard high-street strong Cornish cheddar for cooking, as well as eating generous quantities of it uncooked with no ill effects. It's not the quantity I use for cooking either. Last night I started on a new 500g block of cheddar, and just grated a little off it for the topping for my supper. I've just weighed the rest of the block: 460g remaining. I know I often eat more than 40g of uncooked cheese (all kinds) at a sitting with no problems.

I don't know what it can be either, though my money's on the physics teacher. I'm not too mystified as to why this has only started recently, as I've noticed there are quite a few (non-dairy) foods I can no longer digest as I get older.

I don't go with the psychological effect of the texture either - I love the sight, smell and taste of cooked cheese, and never feel at all nauseated during or after eating it. It's just that it goes through me way too fast! Don't know if it's connected, but I can remember one type of cheese making me feel sick, and sometimes vomit, when I was a child. It was those horrible little triangles of processed cheese. I still feel sick when I remember the smell of them now!

Gail S 9 months ago

Just forgot to add that I met someone once who had the same problem with apples!

Gail S 9 months ago

Wow. Thanks for this site. Also thought I was alone & idly searching for a chemical answer, so I go with the chemistry teacher theory too. The only reason I no longer have a problem is that just the smell of cooked cheese makes me gag with nausea and run out of the house or restaurant (problem for my husband of course!) so I never eat it - period. Like many I can eat any amount of cold cheese and cold pizza (so does the chemistry change back again?) but heated butter also makes me feel sick to a lesser extent.

Werner (South Africa) 10 months ago

I have no issues with yogurt, Milk or Cheese but the minute I eat melted cheese, it literally takes 10-15 minutes then I have diarrhea. My Wife thinks I am looney and its a brilliant act to avoid washing the dishes after dinner.

Joyce Alt 10 months ago

Wow... For years I suffered with unbelievable abd pain and terrible diarrhea after eating melted cheese...not during the consumption of the food, but about an hour after eating. These symptoms would/can rage for 12-24 hours after eating melted cheese. I can eat cold dairy products without issue. For the longest time I struggled attempting to figure out what in the world was happening and why. So, I began to journal my life to try and find the common link.... I followed closely the stresses in my life, my work habits, my exercise, how I slept and what I ate and drank ..... the common link became very obvious in review. Melted cheese. Good luck to all who experience this same challenge. It was reassuring to know... I was not crazy.

Eloise 10 months ago

I love my Cheeseless pizzas. I have been laughed at and also "tricked" but people are used to me now. Including pizza hut and dominoes who make me cheeseless pizzas totally seperate when I say i have an allergy. Definitely not lactose as I eat tonned of uncooked cheddar and dairy - but soft cheeses are a bit dodgy. I go for the trans fats snd/or enzyme theory. Glad not to be alone; )

joy 10 months ago

This is so comforting to know there are others who have the same issue as me. People look at me weird as I skim the cheese off my pizza. If I put too much cheese on chips and cheese I am ready to throw up. I know I cannot do melted cheese in casseroles, which keeps me away from a lot of tasty stuff. Thanks for the info about enzymes never gave that a thot. I too can do any cold dairy no problem, only what I thot was the rich stuff.

SueHurrell 10 months ago

Just googling as my 10 year old daughter was just randomly sick in her bed again, after eating pizza. Seems that mozzarella is the main problem. Her dad and grandfather won't eat melted cheese. Thanks to all for comments it seems we have identified the problem and potentially the cause (familial lack of enzymes needed to digest the broken-down cheese). Oddly she is ok with milk yogurt, harder cheeses, blue cheese etc but uncooked and cooked mozarella seem to be the culprits.

Diane 11 months ago

Thanks for your page. I can't believe I couldn't find a diagnosis on the net! For some time I've known to steer clear of dishes with melted, soft cheese. Tonight I fancied grilled cheese toasties & didn't even think about what cheese was in the fridge. I don't know what it was but OMG! The pains were excruciating, then came the diarreha - for the first time I was actually nauseous. It's about an hour later now & I think the worst has passed and as far as I'm concerned, I have an allergy melted soft cheese. I, like others here, can drink milk, eat yoghurt & ice cream without any side affects. Thank you for starting this page & good luck to fellow suffers out there.

11 months ago

In our family, we were analysed by a Consultant Allergist in Scotland many years ago. It was discovered that we need 7 or 8 isoenzymes to digest the CASEIN (protein) in melted cheese.

My mother only has two; I have three; my sister has 4 and my father has the full complement.

My mother cannot eat anything further down the solid dairy products than yogurt. I can eat all bar melted cheese and my sister has some intolerance to some melted and some blue cheeses

Elle 11 months ago

It's so refreshing to hear someone else has a similar problem to me! Although I am sorry you have it - it's horrid :-( I just thought I was so weird!

My issue is with cooked cream. I can eat cold cream, cream that has been heated up and cooled down again, so it is cool when I actually eat it, every other dairy product under the sun; frozen, cold, cooked, warm, boiling hot, anything!!! Just not COOKED CREAM! Even the tiniest hint of it sends my stomach churning!

I too hate the questions from others as they give you strange looks or make smart-arsed comments! I also hate that I have turned into a 'label-reader' in supermarkets and that annoying person in a restaurant who has to ask the question, "Is there cream in that?!". Aaaarrrrgghhhh!!!

The explanation I was given once from a Nurse is slightly similar to yours:- She said that as cream is cooked, the bacteria in it changes and that can disrupt/upset/not agree with the stomach bacteria, hence making you unable to digest and inevitably making you poorly.

Samm 12 months ago

I found my people! I have the same issue! Worst stomach pain of my life! Glad I'm not alone!

Carol New Zealand 12 months ago

I have just had some fried haloumi cheese for the very first time. Within 15 minutes my stomach is really aching. It is the same reaction when I eat egg whites so I now know I'm also allergic to the protein in the haloumi cheese!

Holly 12 months ago

I have an issue too. Melted cheese gives me a stomach ache. It used to before pregnancy, and now that I'm pregnant it has worsened. My husband is very sad that we rarely eat pizza anymore. Maybe cooking it causes the protiens to change or something...

Marylee 12 months ago

I was so relieved to read your story. I suffer from the same problem. I can tolerate milk in my cereal and ice cream, but experience severe bloating and gastrointestinal problems when eating cooked ricotta cheese and other cooked cheeses, particularly soft cheeses with a higher milk content. After years of suffering, it occurred to me that my problem must be due to a change in the chemical compound of cheese and other milk products when heated or cooked. I believe it is the reduction in enzymes that causes the body to reject the cooked milk and cheese. If I take a sufficient amount of the digestive enzyme lactase, I can tolerate the dairy.

angela 14 months ago

i have this issue somewhat also. i sometimes CAN and fo est pizza and melted cheese...other times ill cook something, antivipating the gooey goodness, but by yhe times its out of the oven, my gag reflex is going at the dmell, and my stomach is churning. cold cheeses usually pose no issues.

Adam 14 months ago

I have the same kind of problem where I can drink milk until the cows come home, I can eat yogurt and uncooked cheese, but as soon as its been cooked that's it, after about 30 minutes too an hour, my stomach starts bubbling up and the cramps start, I've never been sick from it, but always Diarrhoea or Steatorrhea. I now drink lemon water every morning and it's helped a lot but not cured. I miss pizza :(

S.McW 15 months ago

Processed cheese, melted or not, makes me sick, but I'm fine with parmesan and French cheese. I'm trying to figure out my problem too. Good luck!

Ann Murray wainma profile image

Ann Murray wainma 16 months ago

Hi. I have trouble with melted/cooked cheese, i also get stomach ache with full fat milk and full fat yogurts. I can use fat free milk or have a fat free yogurts . i often thought it must be the fats in dairy , reading this has been a great help . Thanks. Ann

Emilt 16 months ago

I have the same problem. I just started taking digestive enzymes, they have helped tremendously. With that said I forgot them today ate melted cheese and now I'm on Google looking for a fast remedy to stop my stomach ache

Grace 17 months ago

I have the exact same thing as you, as does my Mum. The other half of my family are completely fine and can eat pizza and all other cooked cheese goodies, as can my grandparents on my mum's side so it doesn't seem to be a guarenteed hereditary thing.

We usually get round it, and I am well known for bringing my own 'pizza' whenever someone invites a bunch of people round to order takeout, but I don't have an official idea either.

What you are saying about fats breaking down makes a lot of sense though, as we were told by a pizzaria owner ( I know not that trustworthy but they do know about cheese I suppose) that when melted an oil is emitted from the cheese and that they had found people were allergic to that in the past, so maybe that is something to do with the oil.

I honestly didn't realise that so many people had the same symptoms, i thought it was just a quirk I had!

JoDec 18 months ago

Hi All, i have the opposite to most of you; I can eat cooked cheese and love it, although it has to be cooked, not just melted, but raw cheese brings me out in hives and makes my mouth swell up. I can eat all dairy products, as it is mold that I am allergic to. The physics teacher sounds spot on, as the change that takes place in the cooking of the cheese is what makes it edible and safe for me.

unknowncramper 18 months ago

Yes I have a problem after eating melted or hot cheese, don't know why, or when this problem arrived. looking for answers, I am fine when I drink milk, or icecream or even uncook cheese, seeking answers of unkown why??

Sian 19 months ago

Gosh, I finally found others who have the same issue as me. When I go for food at friends' houses and they ask if there's anything I can't eat and I say cooked cheese they think I'm making it up.

I get terrible cramps and diarhea within really short time. Today I had feta on roast veg at my friend's, didn't realise some of it had been melted, now rushing to toilet....

Heavy cream and ice cream have also been problematic over the years.

All of these issues have emerged in the last 20 years, no problems well into my late 30's.

Thanks for posting this Andy, rather than an allergy wouldn't it just be considered an intolerance I wonder?

Ben 19 months ago

About 20 years ago I used to consume a lot of melted cheese on toast for breakfast. After 5 mins I found myself filling slightly sick and had large amounts of fluid in my mouth.(20 years later) I do not eat cheese on toast more than once a week and have found my intolerance to be under control. So I assume my intolerance is a very mild case.

Candi37 19 months ago

Glad I found everyone here....about 6 months ago I started feeling ill after having different foods. Only just realised a week ago that it is melted cheese ( on cheesy cauliflower , potato bake or pasta bake, toasted sandwiches and now pizza). It can hit me within 20 mins ... Until I realised it was this I would eat lasagna for dinner and go to bed, the pain would wake me and I would have to bolt to the toilet with diarrhea, not once but for the next few hours constantly, I would sweat, have chronic stomach pains and shooting pains on my lower right hand side, it virtually paralyses me. It would hit me around 3am and It would slowly stop by 5am ( no good when you have to work in the morning) .

When cheese and other dairy are in there natural cold state I am fine,

Although I have now switched to A2 milk and cream products as when I used to heat them up by cooking I would have similar problems with the generic brand.....something has changed with my body or perhaps the way the food is made...

The only cooked cheese I can have is goats cheese (Haloumi) on the BBQ, I am pain at all.... I have been so ill that I am getting further testing done to see what is actually going on......

As when you tell people you can't eat melted cheese, it's like what are you for real..... I really enjoyed reading everyone's comments...

Cazza 19 months ago

I though I was alone with cheese issue :) !!! When I eat melted cheese about an hour or so after I get bad cramps and really bad wind !! I avoided it and though tonight I'll try it again and see and yes it's defo cheese melted . I'm fine with other dairy products !! It's a mystery !!!

Angela R 20 months ago

I think I have this. I never had it before. But after my first pregnancy I can't seem to tolerate melted cheese. I've gotten sick two times that I've had it. Once on christmas, when i made queso and again yesterday. I ate a hotdog with chili and melted cheese. I threw it all up. I could be wrong and this could just be my body adjusting to post pregnancy but I haven't asked my doctor about this. I can handle regular cheese(shredded and whole) and dairy products, though I do get a little gassy with whole milk. :) There doesn't seem to be anything related my post pregnancy body and melted cheese but I do know that lately if I eat too much the food gets stuck just below my sternum. I feel like I'm going to explode but I don't unless I force it. Any feedback would help. Sorry to be gross about some things. :)

Lauren 20 months ago

I just googled this because I have been having the same problem! I thought at first it was how oily the cheese got when it melted which caused my bad stomach pains. The chemical theory makes a lot of sense. Thank you for your post!

Dids 20 months ago

I too feel so ill when I eat anything containing melted cheese, weirdly I get the same with egg white (however the egg is cooked) and fried food. I had 4 small slices of Garlic pizza with a weeny amount of grated cheese this evening, 5 hours on I am still feeling really nauseous. The older I get the worse it gets. I can eat hard cheese and egg yolk.

Peter 21 months ago

I love cheese on toast but I get pain in my gut after eating and will be on the loo all night but uncooked cheese I am okay

Carol 21 months ago

I've been violently sick all day today - stabbing pain in my gut. This is after eating too much pizza too late at night. People never believed my "sensitivity". Thanks!

lisa 21 months ago

Would this still happen with lactose free cheese, if you melted that would we still have problems?

Dave 22 months ago

Thanks for this everybody! Our 9 yr old has the same symptoms, nice to know we are not alone. We've found he can tolerate melted goats cheese and now he can eat pizza again - we go to Papa Murphy's, order his pizza without cheese, add the goat cheese at home, cook it and he's a happy guy!

Michelle 22 months ago

Hi all, my son is 7 and has been telling me that he gets sick from melts cheese for over a year now, he feels great knowing he is not alone, I will have to watch the lactose intake I think now. Thanks so much for sharing.

Frank O' The Mountain 23 months ago

What kind of hell is this where melted cheese is evil? Grilled cheese has been making me feel sick in the guts for the last few years. I shall experiment.

Dionne 23 months ago

I'm so glad I've read this post. My mind is now at ease. All my life I've had issues with milk so I'd drink or consume it in moderation. Box macaroni and cheese, grilled cheese, coffee with cream and 1 bowl of cereal sends me to the toilet for hours. I rarely vomit but it has happened before along with diarrhea. I've been assuming its just colored cheese, but this post makes a lot more sense. I love dairy products and I'm upset I have to give them up to be a healthy person.

Holly789 23 months ago

Thanks for this, what the physics teacher said gives me possible answers for a recent occurance of vomitting after a grilled cheese sandwhich (a very good one). I am 19, only developed lactose intolerance last year, after tolerating dairy my whole life before that which I think is weird. At the time i had been vegetarian for a year, but still had dairy and eggs...dont know if being vegetarian somehow changed my tolerance of not just meat but other animal products like dairy as well. Anyways, I was not extremely lactose...could handle italian food, yogurt, chocolate, etc. just not full on milk. But a few days ago i had a very cheesy (havarti) and buttery grilled cheese sandwhich and about an hour after i puked. That has never happened before, as i tolerated grilled cheese just a month before. The thing is, i started to feel overwhelmed of the sandwhich after my first half of it, but kept eating as i didn't think too much of it. If anyone can think of a reason for this can you let me know? Ive been scared of having any dairy since. Maybe it was too buttery? Too cheesy? To much cholestrol? A mixture of cheese and butter? Food poisoning? Allergies?

Shell 23 months ago

Thanx for the info. My two year old nephew is also fine with uncooked cheese. Melt it and the poor guy has the worst tummy cramps. He even cramped up when he was an infant, receiving it through his mommys milk.

Lyd 24 months ago

I also have this problem but it has only just occurred. I can eat normal not cooked cheese and drink milk until my hearts content but as soon as I eat melted cheese even on pizza not long after I throw it back up. This has only been happening for the last 3/4 months but I've searched the Internet and nobody has heard off it until I stumbled across this page!

Ella 2 years ago

My husband doesn't have any issues with cheese, however whenever he has cream or sour cream which has been cooked he gets really sick. Diarrhoea, sharp stomach pains & sometimes even vomiting. It only seems to be a problem if the cream or sour cream is cooked. Does anyone else have this problem? I've been looking online to understand this further but haven't had any luck yet

Patricia 2 years ago

cooked cheese doesn't make me sick but it does give me really bad indigestion which is so annoying as I am a vegetarian so a lot of the dishes I cook need cheese in them. I find if I just grate it on top just before eating, it's ok.

Rebecca Dugan 2 years ago

I'm so glad I found this site. Although my reactions are different, the foods are the same - melted cheese is a problem, cold cheese is not, even if it's something like cream cheese or something that's a similar consistency to grilled cheese. My reaction is very different than what I've read here, though. I don't get stomach pains after eating, but I do get an itchy throat while eating. I also get this really weird, intense drowsiness feeling, but as soon as I drink something to wash my throat, both get much better. I've also experienced it with cheesecake, and now that I think back, I'm pretty sure it was only with the cooked style, not the no-bake. I'm still searching for anyone else who's experienced these same weird side effects, but I think I'm getting closer.

Rod 2 years ago

I'm sixty nine and one hundred and four days. At one hundred and two days the cooked cheese thing raised its painful head for the very first time, and again today. Stomach 'cramps' for a couple of hours. Certain it's just cooked cheese, glad I'm not alone but sorry you're all suffering!

Erika 2 years ago

It's nice to know I am not alone! Such a shame as I have often used hard cheese in recipes in the past and love it! I suffered with eczema , with bad attacks intermittantly ... Found in my early twenties, during an intense episode that I was allergic to tomato and orange. So ruled those out of my diet for many years! Now I can eat them in moderation. Some types of apples & melon, irritate my mouth so am wary of those too. Hoping if I leave well alone for now in might be able to eat small amounts in the future.. Hasn't yet happened though. Very interesting article and wonderful comments.

Jgb 2 years ago

I don't get sick from melted cheese but if I workout after I have eaten pizza as soon as I work up a sweat I break out in haves all over my body.

Teddi 2 years ago

I am glad I found this post. I also cramp up very shortly after eating any type of melted cheese when this intolerance is present. But the funny thing is I don't always have it. I can go for long periods of time when it is not a problem, but then for some reason, it comes back and I am intolerant again.

Non cheesy 2 years ago

Yay! Im not alone. No one ever believes me when i say i can't eat melted cheese. I called it 'Pizza Belly' for years and my friends just laughed. Feel somewhat relieved knowing it happens to others.

Kathryn 2 years ago

Nice to know I'm not alone. I am suffering from a cheese toastie I ate yesterday. No vomiting this time but oh the nausea, stomach cramps and diarrhea can go away. Only melted cheese affects me and sometimes too much milk can do it too. It has only just started doing this in the past 6 or so months when I decided to limit my dairy intake...the sickness lasts about 2-3 dats after consuming melted cheese.

Sara 2 years ago

I just wanted your thoughts regarding the following:

Today I fed my toddler a quesadilla (melted cheddar cheese) and then he asks for a cold piece of cheese. He has had melted cheese p4-5 times. Today he has thrown up twice, but only today. Each other time he was fine. Do you think that if he was allergic, he would have had a reaction the first time had it?

Anon 2 years ago

Alright so in regards to my post just above I've been able to eat melted cheese without problems after I got lacteeze tablets. Chew on two mint flavored tablets just before eating pizza and no more stomach aches.

Anon 2 years ago

I too have a problem with eating melted cheese, but not normal cheese or other dairy products. I've been eating pizza from the same store since I was 13 and now I'm 21 and I can't eat it anymore or I get really painful stomach aches. I can't eat toast either so it's not a problem with the pizza store.

ley1970 2 years ago

Ditto to so many comments. I'm a 43 year old female, with increasingly worse symptoms appearing daily. I used to get diarrhea after cheese fondu ... that was years ago. But for the past six years I've been feeling sluggish, nauseous (daily), exhausted etc etc ... the nausea is hideous. Noticed that spaghettic carbonara was a big no no - melted parmesan in it, cream ... wasn't sure which was giving me problems. Then noticed heated cheese was ruining me. Two weeks ago I ate quite a bit of salad (lettuce leaves) and had the worst bout of IBS ... oh boy. Wondering what's next .... or even how to start fixing this problem

Katherine 2 years ago

Wow I thought I was alone, I have exactly the same issue I can eat plenty of cheese. The moment it's melted I get very ill, the same feeling as having an awful hangover!!

Julie 2 years ago

Have you considered a gallbladder problem? I had this problem and still do even after surgery to remove the gallbladder but they suggest that cooked fats are more difficult to digest and need to be reintroduced slowly if at all. I know I'll never be able to eat melted cheese but it's a digestion problem and not a true allergy in my case.

Bev 2 years ago

I can eat almost any cheese cold, with the exception of Stilton and goats cheese, but as soon as it's cooked, my stomach swells to 4 times it's normal size. I get cramps and my heart rate really slows down. I thought it must be a change in the fats and sugars when the cheese is heated. Came on Google to look it up and found this. I don't have problems with any other dairy! Odd! Takes a day or so for my stomach to get back to normal. I can't eat anything else till it does. Be interesting if the scientists did more research, to see the results. In the meantime I stay away from cooked cheese.

Mike6545 2 years ago

I'm the exact opposite. I can eat all the melted cheese I want but if I eat that same cheese unmelted I get allergies on the form of runny nose, sneezing, watery eyes.

Kika 2 years ago

I have the same problem and I thought I was crazy! I discovered this problem 2 years ago and, like others here, I thought was pasta (or some celiac problems)! After eating pizza, I had stomac cramps the whole night and bad diarrhoea. The same happened with lasagna or stuff related to pasta.

For almost 2 years I tried to discover what the problem was and finally I understood that the problem was "baked cheese".

Like Andy, I have no problems eating fresh cheese.

So strange o.O

Thiathy 2 years ago

Still experimenting, but yep, seems to be melted cheese. I have many, many food allergies, but in the last few months I vomit a few hours after eating melted cheese and then get hives; this is an anaphylactic reaction, so quite scary to be getting these without knowing exactly what is causing them. Then I feel sick for about 2-3 days afterwards; my throat feels tight and swallowing is hard; nauseated, diarreah while the cheese works its way out of my system. I am glad I am not crazy, or at least not alone in being crazy!!

Linda 2 years ago

Hi - this is all super reading. Just hoping for more info on whether all you sufferers of this (like myself) have found you are intolerant to other food types too. I have been nauseous most days since the birth of my children 4 and 5 years ago. I can't get to the bottom of it - hormones, food - who knows. But I do know that I feel worse after cooked cheese, with a flying visit to the loo an hour later - and stuck near the loo for a while! But I suspect I'm intolerant to something else too ... any connections to other things? gluten perhaps. Blood tests show I'm on the cusp of being celiac. Would love to hear from you all

Epona 2 years ago

It's comforting (if ultimately of no help) to read all your comments! I have the same thing, from maybe being 12 or so years old - hours of agony almost immediately after eating melted cheese. I used to think it was all about the stringiness of long protein chains in it. But cold pizza doesn't have the same effect. And very milky tea or coffee does the same thing sometimes. It's mysterious. And all we can do is avoid the stuff. But that's not always easy... I'll have to try your cure, Erica!

erica deWitt 2 years ago

me too! only started happening about 2 months ago...I eat tons of yogurt, ice cream, I love bagels and cream cheese, creamy salad dressing. but give me a hot chocolate, latte, slice of pizza, French onion soup, or grilled cheese and I get incredible, debilitating cramps for hours. the only thing that helps me? a glass of bourbon or whiskey. try it! maybe the alcohol breaks down those rouge proteins...

Blair 2 years ago

For me personally, I would define this as an intolerance instead of an allergy.

I think it has to do with the separation of fat from the milk solids. I can eat yogurt, drink milk, or eat solid cheese. But melted cheese on a pizza? My stomach does flipflops. It's funny, because if the cheese is incorporated into a cream sauce (like alfredo or pesto) I'm fine... which leads me to believe the fat-separation theory.

Ellyn 2 years ago

SAME THING HAPPENS TO ME. I have deduced that it is the oil that comes out in the cheese. I have the same problem with other foods if I haven't had any of the "bad oils" in a while such as french fries. Oils such as extra virgin olive oil doesn't seem to have the same effect so I have been only using cold pressed oil when cooking. So far with good results. Although it makes me more sensitive to transfats I've noticed. Hope this helps!!

TCapp1 2 years ago

Well, I was interested to read the hub and the posted comments. For years, I have been trying to find out what is the basis of my food allergy. I went through the litany of lactose intolerance, gluten intorence, as well as thinking I was allergic to tomatoes, vinegars, and a host of other items but one by one they were all eliminated. Only recently have able to quantify it. It is similar to the "melted cheese" allergy but more specifically, I have found that when dairy fat is heated, it truly has a chemical reaction and it causes me severe and immediate problems when it is digested. Here are the things that I know make me ill: drawn butter, cream in coffee (skim milk doesn't but 1/2 & 1/2 does or full cream does), melted cheese mostly in spaghetti sauce, hot chocolate again if made from whole milk or even 2%. I would like to know if any physician or chemist can explain the chemical reaction that occurs or why it does not effect me if I eat regular butter on bread, drink whole milk or ice cream.?

G Duffy 2 years ago

Im with you and the physics teacher. Im writing this while feeling quite ill after melted strong cheddar. This happens all the time. I'm utterly convinced that the grilling process draws out the oils in the cheese and this is what makes us feel ill. I reckon that the oil goes through our digestive system too quickly but eaten uncooked the body digests it much slower


heneryevery 2 years ago

I'm allergic to yellow American Cheese. A few hours after eating I get migraine effects: light sensitivity, room spinning dizzy, extreme vomiting, diarrhea attack, fingers tingle. I'm incapacitated for the entire day. Cheese cake and cheese in deserts also cause effects. I can eat whole pizzas and not be effected though.

c burr 2 years ago

My son has an intolerance think after several years we might be getting some where, he has lots of sickness not had a clue why but started keeping a closer eye and after eating cheesey things including cheese biscuits cooked melted cheese with in an hour feeling rough within 3 vomiting. Thanks for this everyone.

Kai 2 years ago

I can't stop eating cooked cheese.

It hurts so good...

2 years ago

Thank you so much for this! I have been having serious problems with most nasal drip so bad that I can't sleep for the drowning feeling. The doc put me on steroid nasal spray and decongestants but it was not enough. I started using a net I pot which helped a lot but still did not solve it but I made a connection to years of periodic congestion after meals and that every time my PND was very severe I had eaten cheese.

After that I went dairy free for a week and felt better. I am in my 40's and did not have obvious symptoms. However after just a week of no dairy and using my net I pot I stopped most of my snoring and the PND was gone. I also lost 6 lbs and you could see noticeable deflation around my gut.

At this point I tried whey powder since it is in so many things. I was fine so I tried butter again fine then soft fresh mozzarella and still OK.

At this point I realised for certain that it must be the hard cheese like cheddar etc but I cannot find information about it as it is always referenced as being very low lactose and that's about it. Last night I decided to try cheddar again in some lasagne and I paid dearly for it with severe congestion PND and this morning the same loose thick dark and foul smelling poo I have had off and on for years. I will try hard cheese cold again after reading this as I would rather give up meat than cheese.

I hope this works because my daughter suffers with thick congestion after cheese as well and I hope to help her too

Aron 2 years ago

I have a problem with melted cheese also! Difference is, mine leads to diarrhea, not throwing up. I eat regular slice cheese on a sandwich and I'm fine. I can't eat pizza, cheese steaks, grilled cheese sandwiches etc....

BMG 3 years ago

I have this same problem too. I have always assumed it was the chemical bonds that break and separate as oil. My stomach cannot handle any oils from melted things like cheese, butter, and grease from burgers, bacon or steaks. I can eat all the cold cheese, cold butter on a piece of bread, fat on meat if it's still on the steak, piece of bacon, etc., but as soon as these foods are heated and start to separate into to an oil, even a teaspoon or less, I have hours of the most nauseous indigestion with burping and reflux you can imagine....I'm talking about hours of misery.

Alison 3 years ago

Wow, so pleased to find so many others with similar issues. I have been on Slimming World for a while now so have a very reduced dairy intake. Have had periods of unwellness and have tried cutting out all sorts - cheese, butter, onion, bread etc etc etc. I think it's melted cheese although last week I also had a reaction after eating a chocolate digestive so trying a dairy free fortnight.

Kat 3 years ago

I'm the complete opposite than you. I can eat all the melted cheese I want but can't eat any other dairy products. I can't drink milk, can't eat yogurt, can't eat cubed cheese, but as soon as I order a double cheese pizza, I'm fine. Weird.

David Schwind 3 years ago

I began experiencing this.

I believe it is a digestive impairment as a result of mercury toxicity, likely from silver amalgam tooth fillings.

If there are no fillings present, it could be from previous fillings, or alternative metal toxicity.

I will share more soon on my blog at:

Kai 3 years ago

Count me in.. I can eat kgs of yogurt, litres of milk.. More than 2 slices of pizza or a handful of melted cheese and about 5-7 hours later, I have 2-3 toilet sessions, lasting upto 45mons each involving cramps, diarrhea and constipation waves... It's been happening my whole life so I kinda just enjoy the ride, check my emails, goggle stuff etc.. In between the agony that is..ah well just one of those things.. There is no way ill ever stop eating pizza... What's the point if you can't enjoy some pizza aye.. Sweet well my 45mins is nearly up, better so make a coffee. Cheers

Angelagh 3 years ago

I get the sane thing and just put it down to it being greasy, but it always baffled cause although it's melted what you eat it still the sane melted or not. I'm never usually sick but feel sick for hrs after. The strange things is I don't get it from pizza.

I do also get the sane sickly feeling from greasy foods like garlic bread, Indian takeaway, tomato soup, raw onion, toasties, and omelettes but poss just the cheese in the omelette.

Very strange

Gina 3 years ago

This is an interesting discovery. My daughter has been having unexplained seizures. We noticed that she has good days and bad days, which isn't typical for her diagnosis. I noticed that the day or two following a pizza dinner will be bad days for her. It keeps happening and I don't think it's a coincidence. Interestingly, it didn't seem to happen when she had gluten free cheese pizza. Maybe it's the combination of gluten, melted cheese and the preservatives in things like pepperoni or sausage? I can't find anything about what happens to the casein, for example, when the cheese is melted. I have found another post about the interaction of casein and gluten, but she seems to be fine with regular cheese on bread. The other interesting thing is that she has developed an aversion to melted cheese. She ONLY eats it on pizza now!

Lori 3 years ago

Thank you for your article! I have been searching for information on mozzarella intolerance and stumbled on this. My daughter has developed what I thought was an intolerance to mozzarella cheese, but now I'm thinking it is melted cheeses. She can eat yogurt, sliced cold cheeses (cheddar, etc), drink milk, eat ice cream, but cannot eat pizza. She is 16 and we just started to notice a problem within the last year. I thought it was the way mozzarella was processed, but I could not find anything. This makes sense though.

Lisa 3 years ago

Thank you for posting this! I react violently to melted cheese, in particular with cheddar or marble, like with all that oil that pools on it. Within minutes I'll be sweating, terrible cramps, then projectile vomiting and diarrhea. Just melted cheese - eating it in it's normal state is just fine. It started for me about 10 years ago (I'm 35). I have had the same reaction on a few occasions to other triggers, involving deep-fried food (tempura, fries), and over the years I have guessed that it was something to do with the fats and oils. It'd be nice to have more answers as to what exactly the trigger is.

Heather 3 years ago

Thank you so much for writing this article! As a kid I would only eat eggs, milk or ice cream on rare occasions. It took me until my twenties to realize the reason I never "liked" them is because I would feel nauseous afterwards. It was mild enough that because I started avoiding the foods young I hadn't noticed. I had always loved cheese but mozzerella sticks and baked brie made me sick. I'm okay with most pizzas but some (especially Pizza Hut) make me sick. Grilled cheese has always made me sick but I still crave it sometimes. I usually use american cheese slices but I just tried it using Muenster, and I'm not sick! That's when I googled melted cheese allergies and got your article. This is the strangest thing and I would love to participate in a study some day to figure out what the problem is. It's 2013, shouldn't we have a clue by now?

Ava 3 years ago

As far as I'm aware melted cheese is fine, but if I ever have hot milk I feel terrible for an hour or two as if I have to work it off, I can have tea with milk but I will feel quite lethargic but not as bad as something like hot chocolate. It's the only dairy product or form that makes me feel that way as I've tried others as a test and never seen a negative reaction

Melly 3 years ago

I stumbled across this in search of answeres for my own little problem. It seems the exact opposite of yours. I can eat melted cheese, yogurt and drink milk till I burst. But as soon as I eat a piece of cheese thats been sliced right from the block I have horrible stomach cramps and end up in the bathroom unable to leave the toilet. My dr thinks its lactose intolerance but i have no problems with other dairy....

Mimi 3 years ago

My 17 month old son has had exactly the same symptoms as yours. It did not cross my mind until I read your article... Thank you for writing this. How can we raise the awareness though?

Gracee 3 years ago

I always have this problem too, but i dont throw up i just always feel ill after eating melted cheese on home made pizzas and hamburgers.

steve drinkwater 3 years ago

I have this problem in reverse.I cannot eat cold cheese of any kind,It reaches the top of my stomach and up it comes.I travelled a lot through europe in the 70/80s [greece, Italy etc ] watching people eat these mouth watering pizzas and thinking about what I was missing but in the back of my mind the cheese problem reared its ugly head.Then one night after a few beers watching my girlfriend eat this melted cheese delight I tried a piece.It was fantastic ,no nausea no ill effects nothing only joy.I have been eating melted cheese in various forms ever since.Every now and again I will try to eat cold cheese of different kinds to see if my tolerance has changed,no chance it doesn't get further than my neck.Long live pizzas and welsh rarebit and cauliflour cheese.

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Ashley Spenelli 3 years ago

I've been trying to figure out what's up with me. When I was younger I never drank milk. It made me sick. Cheeses did too, and also eggs. I thought I was lactose intolerant. My mom claims she was, but I think she just had a weakness for it. She could drink 2% milk if it had ice in it. Years down the road I stayed at my friends house and they had full milk. I never had it so I tried it. It didn't make me sick. I think my milk sickness was learned. These days the only thing that makes me feel sick are eggs, frosting, and melted cheese. Usually gives me diarrhea within just a few hours of eating it. I thought for a while it was pizza making me sick. But now I realized earlier that it's the cheese. If I eat baked potatoes with cheese, mac and cheese.. damn melted cheese. Why is it so good? I learned today that most people who are lactose intolerant don't even have a problem with cheese. I read that when milk turns to cheese, the lactose turns into something else. Well with that said, I see no reason why taking that same cheese and melting it wouldn't change it again. People can call us crazy, but I believe we are both allergic/sensitive to melted cheese.

ANNA 3 years ago

warm melted cheese does it for me almost every time. love the taste but hate the consequences. it started after my second pregnancy and it's been crazy for last 9 years but i also thought it was just me...good luck everybody!

Mars 3 years ago

I'm not sure if this applies to me. I've noticed that any time I eat melted cheese I get really out of it mentally. Kind of like I'm dizzy or something. I've always thought it had to do with the oils separating or whatever, so the physics thing makes sense to me. Thanks!

Evelyn 3 years ago

I'm lactose intolerant, but un-cooked cheese isn't too bad for me. It does make me feel sick - but melted/cooked cheese makes me feel absolutely terrible. I cant even look at nachos any more without wanting to puke. I am glad that there is a reasonable explanation as to why this is, as I thought that it was a little odd. Thanks!

Jeanne Kinscher 3 years ago

Agree absolutely...have tried googling for reason...but know that cooked "soft" cheese in particular and crem cooked in anything gives me the most awful runs...very hard to find out why???

Nici 3 years ago

Came across this when looking for answers to why I get severe migraines when eating melted cheese but I am fine with uncooked cheese. It's good to hear that others react differently to melted cheese rather than uncooked cheese I definitely agree that the physics teacher has a good point.

Brian Murray 3 years ago

I am so glad iread this article,until now i thought i was a bit of a strange fish,with me it seems to be melted sheeps ,goats cheese are the worst offenders,cheddars are on the whole ok with me ,but but if i eat a lot in one go it affects me my symptoms are severe stomach cramps excess acid and diarrhea.One time recently i had acid reflux it really burnt my throat this was after eating sheeps cheese melted in a mexican dish cooked by friends and as usual didn't want to offend. it's nice to know that i am not alone.

Dee 3 years ago

I've had cooked cheese allergy since I was a kid. I can just about handle melted cheese on pizza and toast but the moment I eat cooked cheese in a white sauce or cooked soft cheeses, an hour or so later i'm throwing up over toilet. I think your last theory is right, think cheese has chemical change when cooked that disagrees with me. I'm glad I'm not alone a more. Thanks

Tanger 3 years ago

Wow, I'm so glad I'm not alone. I've been allergic to melted cheese since I was about 9 years old. My parents had a hard time understanding it for a while as I'd always get picked up from school after the reaction was over (when I could feel confident enough to leave the toilet to make my way to the nurse's office). After a few years of repeated reactions after pizza at home, I think they finally realized it wasn't made up. Of course it took me a long time to work out what it was as for me it isn't all melted cheeses. For instance, mozerlla is the biggest offender, but I can sometimes get away with eating small quantites. I also seem to be affected by how much has melted and cooking times. If I do up a packet of alfredo noodles and I follow the instructions to a T, I am fine. My husband sort of makes up his own instructions and I believe he may have cooked it for longer than suggested, which led to a violent reaction. I can eat melted cheese on a burger, but my in-laws like to do melted cheese on toast with soup where the cheese is literally caked on, which makes my stomach reel looking at it. I can eat my mother's lasagnas fine, but my in-laws' lasagnas (again cheese caked on, reoccuring theme with them) make my stomach reel. Now I am currently having a reaction from take-out pizza and mightly furious because I haven't had a reaction from this shop before, and now trying to figure out the difference. I almost wish it was more consistent so my love for pizza wouldn't be able to convince me that "Maybe it won't happen this time!" For now, I am tortured. I am just glad to hear I am not alone with this stupid reaction.

K22 3 years ago

Im 19 years old and have been having The exact symptoms to cooked cheese as well. All of the doctors i have been to tell me im lactose intolherant even though i can eat all dairy products except for cheese when it's cooked. I think your last theory is on the brink of a major science discovery. Please keep us up to date.

ukgirl 3 years ago

I have exactly the same problem - can eat some but not all dairy products but definitely not melted cheese. I also cannot eat rare beef. I believe that these two things may be connected as - apparently - beef contains some of the same proteins as milk. Has anyone else experienced the same?

Timi 3 years ago

Thank u for sharing! I have the opposite problem and would love some answers!! i.e. i can eat it melted but not the regular way.

ug24des 3 years ago

I have the same thing - bloating/cramps/diarrhea/sweating triggered by any melted cheese on pizza/pasta/grilled cheese etc but ice cream/cold cheese are all fine.

I also have the same issue with red meat - especially fatty meat (never with chicken). Sometimes also have an issue with oil that is non-vegetable - i.e deep fried foods (olive oil seems to be fine).

I have also never found an answer but thought that it could be a wider intolerance to fat in my diet - if I cut these foods out then I will invariably be fine for months, however within 30 mins of eating melted cheese/red meat the symptoms will be back.

Steve 3 years ago

I have the same problem Russ, melted cheese and also milk if it's heated up. Long toilet trips. Costa cappuccinos are a killer!

Claudia 3 years ago

I used to eat cooked cheese w/out issue. After my youngest was born w/ an almost immediate dairy allergy we changed our diets. So 5 years later when I try to eat cooked cheese my stomach hurts for hours! My mom claims cooked cheese is hard to digest & my stomach agrees.

Russ 3 years ago

Me too. Melted cheese, everytime. Usually it hits me around 3-4am while I am sleeping, terrible stomach cramps followed by long trips to the toilet for the rest of the night.

Michelle 3 years ago

Finally a logical answer. At first I thought I was just eating to fast, but it doesn't matter how fast, I will still be ill. I find the reaction to be pretty immediate. Oh well, at least I know I'm not the only one throwing up out there

jo-anna 3 years ago

Yes, I can't eat boiled or fried eggs. Only poached lightly or scrambled. As for cheese and milk..go for months eating it in any form, then all of a sudden, can't stomach the thought. Weird...

Jill 3 years ago

Thanks so much for your post-my son is diabetic and have noticed grilled cheese and pizza make his blood sugar go up-thought it was his corn sensitivity to crust and bread but have eliminated melted cheese for past 2 weeks and his blood sugar is coming down-have to decrease insulin 2x already-this is so enlightening!! He can eat hard cheese all the time and we eat ice cream every night-no issues only with melted cheese!!

claws 3 years ago

Ha! I just came off the loo for the 3rd time in the middle of the night - excruciating tummy ache and diarrhoea, now I can't sleep and did a search and I'm so glad I found your article.

For me it is always the mozzarella on the pizza - I can have a small slice or two, beyond that I will get my torture few hours later.

But tonight at dinner I had something different - a couple of shrimps in some runny cheesy sauce, and now reading your article I'm starting to realise it's due to the cheese being melted.

I'm generally ok with milk, non melted mozzarella and other cheeses, even cheddar on burgers (now that I recall I had a bad episode once after eating a big mac but I'm not sure if its the cheese cos normally I'm ok with burger cheeses) ... but the pizza cheese, yup, gets me every time.

heather77 3 years ago

I have the SAME PROBLEM!!!!! Here is what in the dairy world I can eat and not have issues:

milk, uncooked cheese, ranch dressing, yogurt, ice cream, frozen yogurt, cream cheese.

These are the dairy products that give me a lot of issues:

Steamed milk in my starbucks mochas

melted cheese on nachos, pizza (or anything else!)

Does anyone really know what is causing this? I want to be able to eat these items and thought about taking an over the counter product to deal with it. But I am not sure what I can do if it is only due to the cooked/heated products.....

Mari 4 years ago

I am so happy I found this! I just came back from lunch and I was telling my co-worker that I am feeling terrible because I just ate sandwich with hot mozarella and every time I eat melted cheese it hurts my stomach, not to mention I can't even taste warm milk. I always thought that I had a very weak stomach but after reading all this I can see that apparently there is something when you heat dairy that causes me terrible stomach aches.

Joanna 4 years ago

This happens to me! Also happens with cream cheese...i.e. if it is on a toasted bagel and melts slightly...i get very ill and vomit it up. I always thought i was weird. On another topic...I can't eat salty things with a hot in a cup of tea with a ritz (or other salty) cracker, or coffee and a few potato chips. To me it is definitely a reaction between the cheese and the heat that renders it indigestible to us. Definitely not lactose intolerance

EchoRose 4 years ago

Heat releases chemical reactions... I have not completed my research into this matter yet I have had the same difficulty for nearly a decade now. I became allergic to nearly everything following an outbreak of Shingles so it may be that the Pox virus can leave people super sensitive to chemical which our food supply is fully contaminated with! Sour Cream kills me when nearly all other dairy products are fine as long as the cows were not given any hormones, antibiotics, etc... while cheese when heated makes me violently ill. Cold pizza is fine! so I discovered that once the cheese completely cools again, the cheese is fine. It is in the heated state that it causes the problem due to the chemical release induced by heating it. I have more useful info in my Squidoo page if you are interested: The Spectral Palate @ best of luck and also, the most healthy thing you can do in your diet is to eliminate BLEACH particularly bleached flour. Simply by switching to Unbleached Flour, your overall health and future health will improve greatly!

Anita M 4 years ago

Found this thread when trying to find out why my 7 year old son ALWAYS gets a tummy ache after eating pizza and some pasta dishes. Had ruled out cheese as he has it frequently in his sandwiches for school and invariably a cheese string. No problem. Plain pasta is not a problem either, but as soon as I sprinkle grated cheese on it that melts, he complains of a tummy ache afterwards. Process of elimination has left me with melted cheese as the culprit. Amazed how many comments there have been and glad I'm not going mad (and that his intolerance doesn't sound as severe as many of you) ! At least it's quite an easy one to avoid now I know it's a likely cause. Thank you !

Ann Virginia 4 years ago

Wow, glad I found this. I too can eat all dairy products, including uncooked cheese, and am fine. Once I eat the melted/cooked cheese, I am full of gas and bloating for hours until it goes through me. I figured it was the tomato sauce since the same things happens when I eat lasagne, pizza, etc but then I can eat a tomato sandwich with a slice of cheese and have no problem or spaghetti sauce with no cheese and am fine. Must be something in the breakdown of the food once it is cooked. My son has also mentioned he has a reaction after eating pizza but is fine with other dairy products. Very interesting! Thanks.

Cheryl 4 years ago

Me too !!!! with me ..... I am 52 now and have had pizza off and on thru-out my life.....just about 2 years ago it started with me

pizza makes me vomit, regular milk and dairy products do not??

the whole heating enzyme digestive theory makes sense to me

Thank you

Mike 4 years ago

I'm suspecting that I'm a victim of this one as well. I can enjoy cheese of the cold variety in quite an amount without any ill effects but as soon as it's melted? Say hello to incredible stomach pains which are (Suspiciously) cured very quickly by sending back out the way it went in. Furthermore, I've noticed that for me at least, this issue tends to occur most often when the cheese is under-cooked or from the cheap frozen Pizza's. I seem to have little problem with take-away or restaurant Pizza's - It may be that they cook it thoroughly or use a different type of cheese to the cheap stuff. I've had this issue for a while and will start paying some proper attention to it to see if I can figure out the root causes better.

Christina 4 years ago

I also have this problem, and I sweat profusely from my face while I am throwing up! I thought that I was alone in this, while I wish none of us were effected, it's nice to know that I am not alone.

Steve R 4 years ago

Interesting - have been 'cooked cheese intolerant' as long as I can remember, but love milk, cream, mayo etc with only mild reaction if I eat too much. Am ill with anything containing heated cheese even if I didn't know it had any !

Kit 4 years ago

I have a similar issue with cooked cheese It doesn't stay with me either, but mine comes out the other end! It doesn't stop me from eating it, and it certainly doesn't prevent my enjoying a nice slice of pizza or a home-made mac and cheese, but I know it'll be an instant exit so I stay close to home!

Sadie 4 years ago

I am so happy to know there are other people with this issue! I myself have this issue but instead of throwing up I am in immense pain for hours (most likely due to my Crohn's as well. However, I have learned a way to still enjoy melted cheese. I buy rice cheese, or alternative cheese, that is sold in places like Whole Foods. It is a bit pricier than regular cheese but for the times I'd like to enjoy pizza or lasagna I specifically buy it and I do not get the symptoms :)

pix 4 years ago

A friend cannot tolerate melted cheese. It causes his heart rate to drop causing dizziness, becoming incoherent and sometimes passes-out. We tried researching this but cannot find an answer. Thank you for your blog, let the problem go "out there" and hopefully a solution be found.

Naomi 4 years ago

I'm glad I found your post! I, too, have major problems digesting, or not..., melted cheese. Thanks for the info!

Wanda 4 years ago

Just read this in search for answers. Had a grilled cheese small piece for dinner and spent the evening on the loo. So found this hub. I was thinking that it was glutton or lactose intolerant. But now thinking back at foods that bother me are... Grilled cheese, melted cheese in macaroni, hot pizza, and I can't have melted butter with seafood either. Thanks a bunch. This saves me some stomach problems

May 4 years ago

Thank you for sharing this. We're trying to figure out if my son has a similar problem. He tends to vomit when we're out at a restaurant, usually if he's had pizza, but not always. Yesteday it was while eating a grilled cheese sandwich. I don't know if it's the fact that the cheese is melted (but it doesn't always happen and it's becoming less frequent) or if the food in restaurants isn't always the freshest? Or is it the consistency and maybe he's not chewing well and then gagging?

But this gives us something to think about!

llareggub 4 years ago

I have suffered from GORD for some years and in an effort to narrow down the triggers, I kept a food diary. Early on I identified cooked cheese as one of the main culprits, although curiously I am fine with Mozarella and Feta. Thank you for this.

raiderjazs 4 years ago from Chenango County,New York

Amazed to find this today.I recently went through 4 weeks straight of horrible headaches....worse than migraines.I did alot of figuring and the only 'new' thing I did in those weeks a grilled cheese sandwich every day for lunch.I have never had the issue before,but I've also never eaten cheese every single day for weeks.I know,weird but I get on 'food kicks' had assumed it was maybe a seasonal allergy or sinus infection.But when I realized the cheese thing,I stopped eating it completely....and bam! no more headaches!! I thought it was very weird considering I drink milkshakes with no issue and eat pizza occassionally and have no issue.It is good to know I'm not the only one.Thank you for posting this :)

Shawn 4 years ago

I have a very similar situation. I can drink all the milk I want, and eat as much ice cream as I can without problems. I even eat a stick a string cheese almost every day with lunch. But dishes with melted cheese often have me running to the bathroom.

For me, it's not all melted cheeses. Grilled cheese sandwiches seem to be fine. It's also only pizza from certain restaurants, for example. I so far cannot pin it down to anything specific, which is very frustrating.

Sue 4 years ago

I can't eat melted cheese either.

I kept a food diary , as I kept " acting out" my dreams, with kicking and screaming whilst I was in deep sleep. I eventually got a diagnosis of REM Sleep disorder.

Astonishingly the only food which guaranteed a bad night was melted cheese.

I see this is a form of allergy, but am not sure why I develop these symptoms.

Thanks for posting , I feel less of a freak now:0)

caroline 4 years ago

i cannot even smell cooking cheese without getting a violent migraine, i cant handle any cheese with out disinfecting my hands within a few minutes or i get a migraine .i definitely cant eat any cheese at all -or guess what -i will get a violent migraine!!

Natalie 4 years ago

I have sharp, serious pains in my stomach and back after eating warm cheese. It's strange because I've eaten it a million times growing up and suddenly this last year I have this horrible pain. I even thought it was an ulcer. I documented what I ate and usually warm cheese was the culprit. My nutritionist explained fats take longer to digest as well. I'm only 23 it seems like getting older is no fun! I can't eat things I just did a year ago. Now I just have to figure out how to ease my pain when it happens :( so far heat helps a little. Sometimes it's so terrible I Take sleeping pills to force myself to sleep...

moni 4 years ago

I thought I was crazy trying to explain that I could eat "raw" cheese but not melted. Thank you for proving I'm not crazy, at least in regards to this.

Matt 4 years ago

Exactly the same as people describe here, I've just eaten melted cheese on a tuna pasta bake and less than an hour later I have terribly smelly gas and my guts are gurgling! My brother says he has the same problem...

Mar 4 years ago

Glad to have found this information. I have spent years wondering why I felt so sick after eating anything containing cooked cheese. Excessive "burping" and a skipping heartbeat follows eating anything with cooked cheese. Almost went to the ER several nights ago. Found this information and now know it is not all in my mind ! I, also, can eat uncooked cheese with no problems...also yogurt and milk. It's just anything with cooked cheese! Done with anything containing cooked cheese !

Chris 4 years ago

You are not alone, sir, you are NOT alone. Explosive liquid diarrhea within minutes of consuming melted cheese.

Jennifer 4 years ago

I have a similar story. When my son was born, I exclusively breastfed, then ended up exclusively pumping (which decreases your supply because it is based on supply and demand, and a synthetic stimulus isn't quite like a baby suckling). So we tried formula and it made my son so incredibly sick, he vomited for hours and could barely move. I suspected he had a dairy allergy, so the pediatrician had me try different formulas and he kept getting sick and finally was smart enough to catch on that ANY type of formula wasn't breastmilk. I told the peds again and she just didn't think he had a milk allergy, because "how could he tolerate [my] breastmilk" when I had eaten dairy and that should have passed into the milk and affecting him. I still thought he had an allergy. So long story short, my son saw a peds gi doc and without doing any tests said "your son has a cow's milk

protein allergy. Not a lactose allergy, that us sugar. You see, cow's milk protein molecules are very large and humans aren't really designed to break them down and therefore it causes inflammation and many times immunological responses". Sounded good to me. We did an allergy blood test and the only thing that tested positive was the cow's milk! DUH!!! Anyway, i was able to feed my son breastmilk for 13 months and then we transitioned to almond and coconut milk without any problems! I have noticed over time he has started to develop more of a tolerance for dairy, however it has to be cooked in a product. If he eats uncooked cheese he develops a rash, etc. It's the opposite for us! So my theory is heat must cause some sort of chemical reaction to the protein chains, and allows it to be more tolerable for him to digest. Don't feel bad when people give you a hard time! I had people giving us a hard time for a year saying I should just force my son to eat it! Why would I force discomfort on a baby. People can be ignorant! Good luck with your research. :-))

Joyce 4 years ago

I have been trying to figure my own allergy out. Cooked mozzarella causes me to go into anaphylactic shock, but I can eat string cheese with no reaction. I can't have heavy cream that's cooked, but I can have it cold. I eat cereal all the time, but a hot chocolate gives me a terrible stomach ache.

Thanks for sharing your experiences.

Christina 4 years ago

I suspected that my son might have the same issue as all the other posts described. One thing I would love an answer to though, does anyone have a reaction to Parmesan cheese from Kraft that you sprinkle on your pasta? My son definitely does. I. Looked it up and it is made from cooked milk. Thank you for starting this blog. Would. Love some feedback.

Alex 4 years ago

Another one here - I was diagnosed as lactose intolerant as a child and grew out of it.

Melted cheese over the last few years began to make me feel sick and now have explosive diarrhoea within a few minutes of eating it. This has only really happened since suffering with bad food poisoning (Campylobacter)

I am however ok with some melted cheeses - Domino's Pizza is the worst reaction by far!

We have a theory that the heating changes the proteins in the cheese change, which the body then reacts too.

Nobody apart from the missus believes me either!

Mjecu 4 years ago

Wow, this happens to me also and I never thought it happens to other people but whenever I have melted cheese, especially mozzarella, man, I feel sick until the next day..... it's only with melted cheese though!

Thank you for sharing!!!

Jayne 4 years ago

So glad to have found this article, as I have the same 'melted cheese' problem, however I also cannot drink hot milk - this has the same effect. I am totally okay with cold milk and cheese. Have also just added soft fried eggs, and soft boiled eggs to the list recently, although can eat scrambled eggs! How bizarre eh?

Anyone else have problems with additional foods?

Jenna 4 years ago

My friend linked me to this article, because she is studying nutrition. I am mildly lactose intolerant. What I can eat: fair amounts of yogurt, cottage cheese, cold cheeses of any kind, small amounts of sour cream. What I cant (without a dietary aid, or else I will have the worst stomach pain ever and make about 10 trips to the toilet): ANY amount of melted cheese, medium-large amounts of sour cream, milk, or heavy cream.

I would think this physics professor would probably be quite correct. I have a friend who is allergic to *any* cooked foods! I think I am just going to remain thankful that I can eat cheese and have to pop a few digestive aid pills to be able to eat melted cheese... but it was really good to read this article!

Ezzie 4 years ago

Thanks so much for posting this! I too suffer from this problem. I can eat cheese normally like on crackers (although sometimes can unfortunately make me a bit gassy) but if I have melted cheese I get dry bad cramps and eventual diarrhea! I know that's gross to say sorry! But I actually like the physics teachers explanation. I hate having an allergy to cheese because it's dead set one of my favourite foods. Thanks for posting and making me feel less like a freak!!

Ray 4 years ago

Just had manicotti for supper with lots of melted cheese and 6 hrs later stomach cramps and diarhea.SOmetimes taking an antacid helps but as I get older this has become more of a problem.Never bothered me until my 30's.

Kristina 4 years ago

I'm beginning to experience this exact problem! I grew up eating melted cheese but now as i'm getting older i get incredibly naucious, the inside of my mouth feels like it can't stop salivating, and minerly bloated when i consume melted cheese. I can eat all other dairy products and even most cheesey soups but if it's any other melted cheese i get symptoms. I am so glad i'm not alone on this because no one else will believe me!

Ansie (Ssouth Africa) 4 years ago

I have no allergies whatsoever. I hve Saturday morning headaches - thanks to - it seems- Friday night pizzas. After 50 years I only now realize it is the melted cheese I love so much. I can't handle the headaches though, so I will have to give up the melted cheese.

Anon 4 years ago

Thanks for all who shared their experiences. I seem to have developed this in recent years. Is that even possible?

I was starting to suspect cooked cheese after needing a long session on the loo shortly after eating pizza.

As an experiment I avoided cooked cheese for a while and was fine. Then tried a melted cheese sandwich and less than 30 minutes later I was back on the loo.

I will try avoiding it again to see if I am OK. If so then I guess I have to remove cooked cheese from my diet. A real shame because I love it. D'oh

Eloise Summerfield 4 years ago

I could have written this blog - near-enough identical to my experiences. I have had people mock me - including my mother. They tell me it is all in my head. Yet I can eat something which then makes me sick and I go back to the packet and read the ingredients and find there was cooked cheese in it. Again, I have people try and sneak it into my food, which does not work well at all. I am a Pharmacist and have no answers. Lactose intolerance would be the reverse (i.e. cooked easier to tolerate and milk the worst - but milk and raw cheese is fine). I have to go with something to do with seperating the fact and destroying the enzymes on cooking. I even have to be careful how much the cheese next to warm food gets on the plate (like at a party). Thank you for this blog.

Jane 4 years ago

I am lactose intolerant but can eat specific things such as cottage cheese and hard cheeses. but the second i make a grilled cheese or try to indulge in a pizza, it goes through me in 30 minutes...

why doesn't anyone have an answer?!?!

emily 4 years ago

Thank-goodness i'm not the only one, was beginning to think i was going mad. I too can eat all other diary including uncooked cheese, but as soon as it gets cooked my IBS symptoms flare up in a big way and guarenteed within an hour i am doubled over, seating feeling faint and then on the toilet for the rest of the evening. Took me a while to work out it was the cooked cheese, went through a stage of thinking it was pasta ( lasagne, tuna pasta bake etc used to set off the sypmtoms, but then i ate another meal which didn't have aany pasta and had the same symptoms...soon realised this meal had cooked cheese in it and made the link) thought for a while it was just cheddar, but the other day had same reaction from cooked mozzerella..have been ok in the past with this but now my body has ruled that out aswell! :-(

jackie jane 4 years ago

This also happens to me as well as my grandmother and we have both been told all the theories of above but the chemical one is the one that sticks. We have no intolerance to any other dairy product whatsoever. In fact, we are kind of dairy product addicts! Its just the melted cheese we can't handle. Sometimes I can do pizza if its just a light coat of cheese but I always get nauseous for a bit afterward and for some strange reason it always makes my nose tingle... I usually strip the cheese and just eat the sauce, crust and toppings. At this moment I am recovering from a quesadilla I just attempted to eat. It made me violently ill. I also believe that certain melted cheeses seem to affect me more strongly than others. but I do my best to stick to unmelted cheese. Its just safer that way. Last time I let the roommates talk me into melted cheese- glad to find an article like this knowing i'm not the only odd one out there. :) thanks!

Claire Bhela 4 years ago

i'm having a reaction right now!!!!!! cooked Stilton!, fine with it in its normal state, but cooked - i'm in agony. itchy hands and feet. neck and chest too. now i'm coming out with lumps on my legs and arms.

Libby Cole 4 years ago

Brilliant. So glad I found this. I had a friend with this problem and now my daughter has it. She has a lactose intolerance but as she gets older her intolerance is easing but melted cheese goes straight through her and makes her feel poorly. She is only 18 months now and we've been keeping a food diary for 6 months so I can say with certainty that any intolerance is not in her head!!

aj 5 years ago

I get this all the time. I used to be allergic to all dairy products but grew out of that and am left with this intolerance. I always thought it was something to do with a change in bacteria in cooked cheese.

Myriah 5 years ago

I have this problem too. Not only do I throw up but I get the worst chest pain you can imagine.

Richard49*123 5 years ago

I too thought I was unique until I read your article. I have suffered with a cooked cheese intolerance since a small child and am now retired. I do not have any explanation. But the intolerance is certainly real. Great post. R

Nic 5 years ago

I have the same problem. I'm fine with cold cheese, but the second that it's melted (even just a handful of it on top of some pasta) I get violently ill. I have a different reaction to you, including stomach cramps, sweating and diarrhoea. A doctor explained that it's very unlikely to be lactose intolerance, as the levels of lactose in cheese are far lower than that of milk due to the ageing process. It's unusual as it's only something that has particularly effected me in the last year or so. My other half is a chemical engineer working in food, so I shall have to ask him what his take on what the physics teacher said.

D.C.B. 5 years ago

Hi andyoz, I stumbled across your post because I think I may also have a similar issue with cooked cheese and I did a search online. This was my first search on the subject, and I found your article very interesting. Thanks for sharing! I'll get back to you if I find another answer.

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diseasessymptoms 5 years ago from Philippines

Oh my.. I was really not aware of this allergy. I know a person who is allergic to coconut. I also have allergies with seafood and poultry. Having an allergy is not cool at all. I know how you feel.

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Entourage_007 5 years ago from Santa Barbara, CA

I had no idea that this type of allergy existed. Good hub.

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L.L. Woodard 5 years ago from Oklahoma City

Until this hub I had never known there existed an allergy/intolerance to cooked cheese. I'm with the physics teacher: cooking really is about physical and chemical changes to food, so his explanation makes sense to me. Thanks for sharing.

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