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My Allergy to Melted or Cooked Cheese

Updated on April 17, 2017
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I have been allergic to melted or cooked cheese since I was a child. My father has the same problem.

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?

In this article, 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 will take a look at the answers to these questions.

I 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.

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      Moonfloor 4 days ago

      I have a question for others...I forgot to add in my last comment. Not only does melted cheese make me sick, but ice cream does too. The only difference is, I enjoy ice cream. So I eat it, but then I feel really gross and a bit sick to my stomach. Melted cheese never even looks good to me though. I have found dairy-free ice cream that I like. =)

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      Moonfloor 4 days ago

      I always felt crazy trying to explain this to people. Never met anyone else with this issue. I love cheese, but when it is melted, yuck. Makes me queasy. Ever since childhood. I also get sick eating red tomato sauce, so you can imagine how much I hated even the smell of pizza. Anyhow, now I tolerate pizza and red sauce and sometimes I eat it just to fit in, but it leaves me feeling gross and I always regret doing it. (As a child and teen I would vomit) Around the age of 28 I started trying pizza. Once in a while I will take the last bites of my daughter's grilled cheese (but I will not enjoy it).

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      Marynicole 11 days ago

      I too have this issue. I can eat cold dairy products but anything heated up causes me to get diarrhea and feel nauseous. It began with melted brie cheese I was sampling. Something inside told me not to do it and instantly I became sick. Today I ate wontons with melted cream cheese, sick again!

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      David 2 weeks ago

      Is it possible for someone to produce a list of safe cheeses?

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      Jo Ann 2 weeks ago

      I'm fine with "cold" cheese and milk, as well as most melted cheeses (pizza, mac & cheese). But whenever I eat any cooked pasta dish with ricotta (ravioli, lasagna, manicotti), I end up spending a lot of time in the bathroom a few hours later. I make sure I take lactaid before such a meal and usually it keeps the after-effects to a minimum, but it doesn't prevent them entirely. (And, I know it's not ricotta per se: I can eat a cannoli with no issues at all.)

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      Marylee Marsh 5 weeks ago

      Thank you for sharing your story! I too suffer with a cooked cheese allergy. I agree that the chemical change theory stated by the physics professor makes perfect sense and must be true. In addition to searching the internet, I have also been experimenting with eating cheeses in both cooked and uncooked states. There is some justification to the professor's statement that the cooking process eliminates enzymes. However, taking a sufficient amount of digestive enzymes should allow the cheeses to be properly digested and solve the problem. In my experience, digestive enzymes helped some, but did not completely solve my problems. I believe that the "chemical reaction" in the heating process actually changes the cheese into a different substance, thereby causing the body to reject the "cooked cheese " as a foreign substance.

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      Rayner 5 weeks ago

      I had no idea about melted cheese since I read this and now I don't feel alone anymore! I never understood why I could have cheese and dairy, but the second it was melted/heated or cooked, I felt immediate pain, like my stomach was being twisted and occasional sickness.

      I have so many foods that seem to do this to me and I wish they could do one test that tells us what we should and shouldn't eat. I had an intolerance test but it was very vague and didn't list all the things that cause me problems.

      I have just been told that I have IBS or been told I may be lactose intolerant but finally I have read this and realised that I'm not alone.

      Thanks for sharing your story

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      Lucy 6 weeks ago

      Reading this is like reading my life story, I have exactly the same problems and everyone I've ever met just tells me 'oh you just don't like melted cheese' but when I'm hanging over a toilet bowl after consumption of melted cheese it's not that I don't like melted cheese, it doesn't like me. The question of 'well why can you eat normal cheese' annoys me so much as I have no answer and I can see people looking at each other like I've made this all up and giggling to themselves like I'm lying.

      Sorry for having a little rant but finally I can see I'm not alone in this, I can show my friends and prove once and for all I'm not making it up.

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      J.P. 7 weeks ago

      This is fascinating. I was diagnosed with IBS years ago but about 15 years ago noticed a 'new' trend. Absolutely fine with milk, yogurt, and, most of the time, pizza...but WHITE cheese will have me on the toilet in agony, and melted CHEESE SAUCE of any kind but especially white can cause a terrifying reaction about 2-3 hours after ingestion--sudden feeling of heat, violent stomach cramps, gurgling in the left side, occasional sudden vomiting, and multiple bouts of explosive D.

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      Deborah 8 weeks ago

      Thank you for this article. I started having a melted/cooked cheese intolerance about 6 years ago (age 37-ish ). I loved cooked cheese but it doesn't love me, I end up vomiting within about 30 mins. All other dairy is fine and does not cause me any problems. Many people also think I am mad and must have a dairy intolerance but it is just the cooked cheese!

      Thank you for sharing and making those of use for whom cooked cheese is the enemy, feel normal. (Relatively speaking!)

      xxxx

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      Pauline 2 months ago

      I have always been able to eat melted cheese, and love cauliflower cheese, until this year. I am 56 and if I now eat melted cheese I have violent diarrhoea within 1 hour. I have wondered if it is linked to the menopause in my case.

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      Steve 2 months ago

      I think tonight I nailed it down after 20yrs. While I do not vomit ever, every time I eat a meal that has melted cheddar or melted American cheese I have diarrhea (violent) within 30-60 mins.. I am not lactose intolerant; I can eat ice cream and pizza. If a pizza place uses crappy cheap cheese I get sick tho. I think it's the oils.

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      Amy 2 months ago

      This is VERY interesting. My 5 year old son will not eat meat nor veggies. so Cheese is a huge part of his diet along with fruits and peanut butter thankfully. His all time favorite is Cheese Quesadillas and Cheese dip from the mexican restaurant. Every other restaurant he eats a Grilled Cheese. Since the age of 2 1/2 I bet we have throwed up in every restaurant in town atleast once. It's awful. Doctors say well it's okay - No it's not okay. Sometimes we make it to the restroom and sometimes we don't. Our fave Mexican joint tries to always sit us near the bathroom. I'm not kidding. They love my kid but have cleaned up a lot. We had him tested for dairy allergy and nothing. We know he shouldn't eat it but the kid is going to starve. Once he vomits he's like okay I'm good let's eat some more. Poor kid. Thanks for sharing your thoughts on this.

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      Diana 2 months ago

      I started having this problems after having copious meals with cooked cheese. I noticed after eating cheese pizza at work one night, which sent me into stomach cramps for two hours. I love kefir, yogurt, milk, everything but melted cheese just doesn't sit well with me

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      Debbie 2 months ago

      I am so glad I found this while on google. I thought it was all in my head, my problem is with haloumi. I love the taste, except a few hours later when it comes back up again, with raging stomach cramps. Nice to know I m not on my own here, but sad I can no longer eat the haloumi. I am fine with any other cooked cheese though...

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      Jonathan 3 months ago

      Yep, for some strange reason melted provolone on sandwiches can make me feel nauseated. I don't ever vomit, but I feel like pretty bad, like I might. Cold provolone on sandwiches is SO good though!

      Provolone is my worst offender but Swiss and cheddar can occasionally do it to much lesser degrees. I don't eat many other melted cheeses though, the variety of others are all cold on sandwiches, and I wrongly blamed undercooked burgers or stale meat on toasted sandwiches. It's a pretty quick reaction for me with provolone though--under 10 minutes. About 2-3 hours later, I start to feel much better, and by 4 hours it's usually completely resolved. That just makes me think it's exclusively a stomach thing, and once it's out of my stomach it's not problem. I don't remember ever having this issue when I was in my teens though and made toasted bagel sandwiches with my favorite (provolone) cheese, and I'm guessing it started in my mid 20s...it continues in my early 30s.

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      Stephanie 3 months ago

      I am so glad I'm not crazy!!! For me though it's not as severe. I don't have the digestion issues, which makes the theory not really work for me. It's simply any time I try to eat melted or cooked cheese, my throats gets tight like I have to wheeze. After a few minutes it stops, until I try to take the next bite. Yet same as you, any other dairy is fine!! I do have diagnosed IBS and I wonder if there's anything related between the two.

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      Karen Sojjy 3 months ago

      What a great site to find. I can't eat melted cheese or cream. If I do I get terrible cramps and diarrhoea for a few hours after eating it. If I avoid it for a period and then have a small serve I will be ok. Then because I was ok I eat more and off it starts again. Yes there is something that changes when cheese is melted, but as yet I guess we all have to avoid melted cheese and wait for an answer.

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      Rob_in_Iceland 3 months ago

      I empathise with most who have written about their experiences. What I would like to know is, has anyone has substituted Daiya products (Plant based "cheeze") for their usual cheese....?

      Or, second question, is there a good alternative to cheese - something that isn't going to make me violently ill....!

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      Kitty 3 months ago

      I've noticed this when I was younger but I wasn't exactly sure, but it seems like when I eat cheese melted or not I tend to gag, my parents think it was because of me not drinking milk. [I don't drink it without a flavoring] but milk I'm fine in small amounts. Cheese I can't seem to go without gagging. I'm not sure if i'm allergic or what.

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      Jeanette 3 months ago

      Im allergic to cheddar cheese.. i can have any other cheese. Its so strange it makes me totally exhausted i need to sleep after eating it and my legs and arms come out in big bruises and hugh lumps .it hits me like an hour or so but next day i feel totally drained..

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      MotherOfHappiness 4 months ago

      (Forgive my english, me tired and italian.. not the best of combinations)

      It's about a year since I started to notice that my problem was cheese mostly and milk. And I, studying my body's reactions, came to a similar conclusion as the teacher: it must be the fats.

      I noticed that fat free cheese (very rare), fat free yogurt and fat free milk would work just fine. But anything with a little more fat, especially if hot or undergone the heating process, even if cold at the time of eating it, would cause all sort of problems to my stomach and my tum.

      I know that if I don't eat these products for a long while, then if I eat it once, even in a good amount, it will cause very little or no reactions.

      I love cheese, italian cheese, any cheese.. I could eat cheese everyday, on everything. Deciding to give it up along with milk which I love too (I can start having skimmed milk regularly only once I've quitted everything for a while) is the toughest decision of my eating/cooking life, but has to be done.

      Plus I feel immediately much better, even a couple days without any of these products are enough to feel the difference.

      Me sad. but then I think next time.. in a few months.. I'll be free to indulge in a gooey knafeh and a hot buffalo mozzarella pizza without hurting myself (too much).. followed by other six months of depressing cheeseless life.. but let's just focus on the knafeh and the pizza for now, it'll keep me going.

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      Tonyryo 4 months ago

      Just recently I begin to have issues with any cheese foods expect cottage cheese and cream cheese,along the same time it a!so started with onions and greasy foods. I have reached a point that I now know it's foods with high content that has sulfur in it. It's really upsetting cause our family lives on foods with melted cheese any ideas on why this started so late in life?

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      Emily 4 months ago

      For some reason melted Parmesan seems to be the worst offender for me. I can't identify any other cheeses off the top of my head that irritate my digestive system so much when they're melted. Mozzarella, cheddar, Brie, pepper jack, provolone--not one of them seems to cause irritation when melted, but when I eat Parmesan, I am almost guaranteed to be lying on my bed for the next four hours or so with painful bloating and gas that won't pass. I do recall some weird one-month period about six months ago in which I suddenly became allergic to ALL melted cheese--that was the worst, because as you said, so many dishes contain it (and I loooove the taste of it). Even the littlest bit of it put me in pain for hours. Lactaid helped minimally. Then this huge allergy spontaneously disappeared for all cheeses with the exception of Parmesan. I've been trying to figure out what makes Parmesan so irritable for my digestive system unlike other cheeses (at least, for now) and I came across your post. Thanks so much for researching this. It's refreshing to know I'm not the only one with a melted cheese allergy.

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      Kailey 4 months ago

      Hello!

      I wanted to mention that if there is an issue with your gallbladder you may not be able to process fats very well.

      There is a change made to the cheese, in the separation of fats and distruction of enzymes from cooking the cheese, like you mentioned in the article.

      I think it concentrates the fat and your gallbladder can't keep up and doesn't have the help of the enzymes to break it down.

      I may be wrong but you might want to get a scan of your gallbladder. I know that is next on my list! I miss homemade mac and cheese! Haha

      Thank you for the article!!

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      Catherine 4 months ago

      I have always had an issue digesting melted yellow cheddar cheese, however melted white cheddar is fine. I want to do more research in the breakdown of enzymes in the two different types of cheddar to see why one is fine but not the other.

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      JuliaRobinson 5 months ago

      I can become so ill after eating melted cheese that I googled it and found your site! I love cheese but once it is cooked I am gagging before the first mouthful. Even if I manage to eat it, shortly afterwards I experience the most acute nausea and / or vomiting. Thank you for taking the time to research this bizarre topic. Kindest regards from Manchester UK

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      Jackie Fraser 5 months ago

      Yes, I too have the same problem but my reaction is much less severe than Andrew apart from two occasions after cooked cheese in a restaurant when I felt so ill afterwards that I had to go home. Normally, I have a digestive problems which aren't a big issue but still annoying nonetheless.

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      Txmom 5 months ago

      Commenting at 2 a.m. with GI distress after making and eating a tuna melt sandwich from a new recipe tonight at dinner. I topped it with Provolone cheese (something I do not normally eat). Belly issues started an hour later and continue! As I began googling for 'caper allergy' thinking that was the cause, I remembered the cheese. I don't have an issue with melted cheddar or American cheese it seems. However I remembered getting violently ill and throwing up after having nachos in Mexico made with some kind of WHITE cheese. I was convinced they melted the cheese with eggs, as I do have a raw egg allergy! Causes unbelievable GI distress for me. I can eat well-cooked eggs just fine! This is due to the egg protein being denatured during scrambling or being hard fried. Could a similar opposite reaction somehow be happening when the cheese is melted? Like some type of protein is being released during melting causing an allergy? I am not generally allergic to other dairy products. Could it be only certain types of cheese?

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      Poppy 5 months ago

      I have just read this and is thankful to find some explanation to my abnormal allergy as i can eat some pizzas but if a certain pizza has more melted cheese than other pizza's i am sick for the whole day following the day I ate it. The same happens to me if i have melted cheese on chips, the next day ill be sick for up to 24 hours and its been going on for about 2-3 years. However like you, any normal dairy products, uncooked cheese or even small amounts of melted cheese I am completely fine.

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      Gwen 5 months ago

      I've just read all the comments. Lots! What a useful conversation, as I'm trying to get to the root of my son's intolerance which started at breastfeeding.

      My SUMMARY of the issues and EVIDENCE:

      People here are describing a great variety of dairy intolerances ranging from being able to have no melted cheese, to cheese only when melted.

      2 scientific insights offered I found in these comments:

      1- An consultant allergist found that people vary in the amount of isoenzymes they 'carry' and this effects what sort of dairy they can have. (mentioned in comment by "L")

      2- The physics teacher mentioned in the main blog post also suggests enzymes differ between melted or non melted cheese.

      If anyone is interested in doing research I found this book:

      "Microbiology and Biochemistry of Cheese and Fermented Milk" and tried searching key words...but would need a lot of time to research.

      The only dairy my son (6 now) can tolerate:

      -ONLY AGED CHEESE (e.g. cheddar and parmesan), melted or not.

      -LOW FAT: milk, LF yogurt, chocolate (containing Low Fat milk).

      He cannot tolerate (it goes right through him within minutes):

      HIGHT FAT NON_AGED DAIRY: butter, cream, sour cream, mozzerella, soft cheese, sour cream, chocolate containing whole milk.

      Hope this becomes recognised soon. Clue might be in the isoenzymes we individually carry.

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      Sheena 5 months ago

      Unlike most of you on this hub, I cannot eat cheese at all, nor yogurt, sour milk or cream, etc. I never eat any of these deliberately but have been really ill for 2/3 days after consuming hidden cheesy things e.g. sour cream in Rice Pudding, cake topping made with cream cheese, even cheese free sandwiches made on the same board with the same utensils as cheesy ones. Tonight I have been searching for information as I am still suffering gurgling stomach, brain fog, headache and sweating after swallowing, yesterday, one mouthful of cake with a cream cheese filling.

      Every article about cheese allergy or intolerance insists that there is no such thing, that there is only lactose intolerance but I can have hot or cold milk, cream, custard, ice-cream with no ill effects. I have been like this since childhood, my Mother was the same.

      I was pleased to find this hub as it proves that there are other problems with cheese that are not recognised by the medics and researchers. This is a problem because there is no law that requires Cheese to be listed as an ingredient, only lactose which is not my problem. I understood that the problem was with the bacterium that turns milk into cheese/creme fraich/ yogurt, etc. but none of the on-line sites mention this.

      I find it increasingly difficult to dine out as restaurants seem obsessed with adding cheese/yogurt to soup, salads, vegetables, sauces, cakes and desserts so there is very little on the menu that I can have. If I can I choose a Chinese restaurant or takeaway.

      It is high time that researchers delved deeper into the mysteries of cheese intolerance and gave us some answers, so that people currently diagnosed with IBS, etc or dismissed as cranks can have clear information as to what is causing their problems.

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      Lexi 6 months ago

      I have the SAME problem! It only started after having my son just 6 months ago though. It's been rough to deal with as melted cheese is contained in A LOT of meals we like.

      I definitely think it is a chemical reaction in the cheese when it is melted. I wish I knew more about it! I have found if I take an anti-acid before eating something with melted cheese I'm fine! So that may be useful to someone else suffering from the same problem.

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      Kmy 6 months ago

      Omg. I seldom eat cooked cheese anymore for this reason. I haven't quite figured out what sort of cheese triggers it. But i seem okay when I eat fake cheese (aka plastic american slices) but if I go to a authentic Mexican restaurant to eat cheese enchiladas or order a pizza with a specific sort of mozzerella... im going to have a bad time in a couple of hours!

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      KM 7 months ago

      Crazy!

      I find I can eat uncooked cheese, or cheese that is cooked REALLY well, like browned & starting to crisp up. But not semi-cooked, gooey cheese, without becoming ill. And for some reason, it's even worse if it's eaten with potatoes! ???

      But like you guys, I can eat yogurt, milk etc without a problem!

      Interestingly, I have a problem with eggs too. I can eat them if cooked as meringue, in cake, pancakes etc, but no other way without becoming very sick too!

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      Author

      Andrew Orrell 7 months ago from UK

      A melted cheese allergy alliance! I love it. I'm glad this article has made you realise you're not alone. Since writing this a few years back there have been tens of thousands of reads and hundreds of comments. It's amazing how many people actually suffer from this and it's really glad to know that we are not alone. Thanks for the comments, I always enjoy reading everyone's experiences.

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      Hillaria Davis 7 months ago

      I don't know if you still look at this blog but I just came across it and wanted to say what I've found out about my melted cheese allergy.

      I was a picky eater when I was younger. It wasn't until I was in 6th grade (maybe age 11 or 12) that I even ate melted cheese. Up until that point I had never eaten pizza, cheeseburgers, and don't even mention home made macaroni and cheese(even the thought of it makes me sick). The first encounter with melted cheese was when I was invited to have a sleep over at my friends house and her dad made cheeseburgers. I thought it was just common courtesy to ask it you want cheese on your burger... Apparently not. I ate it anyways though because I didn't want to upset them. All night I was up throwing up. I was thinking I had food poisoning but my friend kept telling me she wasn't sick. After a couple days I started thinking about the possibility of being allergic to melted cheese. I just thought I would avoid melted cheese because I didn't like it anyways.

      My best friend used to always get mad at me for not eating melted cheese so one night she made me a burrito with cheese. Again, I just ate it just to be nice and just like the last time I spend hours over toilet. That's the point I realized I really did have a melted cheese allergy. Everyone told me I'm lactose intolerant but obviously I'm not. I'm not allergic to milk, yogurt, non melted cheese... It's just cheese when it is melted.

      Like one of the theories you have discovered, I have always believed it is a chemical reaction that happens to the cheese during the melting process. It releases a chemical from the fat that we are allergic to. It is so crazy to me. I have never found someone with the same allergy and when I tell people they just think I'm crazy.

      I think we should form a melted cheese allergy alliance.

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      Stephanie 7 months ago

      I've actually never had any sort of dairy intolerance at all. I've never really been a fan of unmelted cheese or yogurt. I'm browsing around trying to self diagnose because something is going on! The last few times I ate pizza I've had to run to the restroom. The whole melted cheese theory seemed like the answer however, I don't remember getting sick after eating cheeseburgers. I thought maybe it was just mozzarella but from what I've read, all cheeses contain the same "ingredient" that qould make someone sick. No idea what's going on, all I know is these sharp pains and bathroom runs are no bueno.

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      Janet 7 months ago

      I'm up at a silly o'clock time, because, yes you guessed... I had cooked cheese. I thought I was mad! Glad to see i'm not alone and going to avoid from now on.

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      Nancy 7 months ago

      This is pretty much spot on, i'm currently writhing around with a hot water bottle on my crampy stomach after some amazing tasting pasta cooked in a cheese wheel. Worth it, but oh god the cramps! Normal cheese is fine, I'm a big cheese platter fan.

      I cut cheese out of my diet accidentally for a couple of years just by virtue of not bothering to add it to stuff and now I cant eat it melted, this has started extending to full cream milk as well. It's like I'm BECOMING lactose intollerent, and I'm a person who used to drink a glass of milk before bed every night for 15 years as a child. If this cheese thing can ever be explained past 'lactose intollerence' or 'IBS' I am certainly listening.

      Thanks for the article, and the open commenting, I never sign up to stuff to comment :)

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      Mallory 7 months ago

      Thank you so much for this post... I've tried so many different things to make my stomach feel better... I get awful headaches, stomach cramps, constipation, gas, bloating, fatigue, etc.... I cut out gluten.. and with it went most cheesy things.. but when I realized that Wasn't it... i went back to my old ways... just today I'm starting to truly believe it's cheese... if not just cooked cheese alone!!!

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      Kate 7 months ago

      I notice that I'm ok with most cheese but melted cheddar sends me straight to the washroom in a lot of pain. I had Quesadilla's for dinner and it made me sick within minutes...

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      pantone 8 months ago

      I suffer the same, if I eat pizza when too hot the cramps and diarrhoea last up to 3 hours in the early hours of the morning (say I ate it at 10 pm). What I do find is that if I let it cool a bit I'm absolutely fine. So I believe it is all about the temperature.

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      Angie 8 months ago

      I am just dabbling into this subject, looking for some kind of answer. My 5 year old, who is not a picky eater at all, likes to actually try new things, has been telling me after he eats macaroni and cheese cups or Velveeta pasta cups that he does not like them because it makes him feel funny after he eats them amdnif inbust one out for his siblings he looks at me terrified. :) I thought maybe there was a powder active ingredient in those cups that makes him dislike it. Then lately when he's been eating shredded cheese, melted, on Tostitos, after he says Mommy I feel funny again and my head and tummy feel weird and sick. He ahasnt thrown up, but I'm waiting for it. He eats a nib of Velveeta regular, string cheese, regular shredded & has never mentioned feeling funny/sick. He still requests the melted cheese foods and eats them & is happy to do so until after the fact, otherwise I wished just say no you probably better not have that. Which I'm probably going to do sooner than later. I just thought what the heck what's in all the hot cheese and not the cold that's suddenly making him feel this way?? Maybe I'm onto something here by reading your post. So thanks. It's the only thing I've read that's lining up with his symptoms right now. Interesting.

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      New to candida 8 months ago

      Oh my goodness! I can't believe I just found this. I was put on the candida diet 1 month ago. Lost 4 and a 1/2 inches off my waist and felt so much better. I had tried cream sauce on 4 butternut squash ravioli (yeadt free) last week and sick within an hour. I had blue cheese this weekend to test if what happened was true and no reaction! Then I started thinking diet was a farce (although I have no idea why I could tolerate the mold ). Last night I had melted cheese and sick this am! I'm going to continue to watch this possible correlation. Thanks for the post!

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      Shevanthi Selvakumar 9 months ago

      Have the same problem. Can have milk, yogurt, but have cramps from eating anything with melted cheese or cream cheese. Any theory behind why this happens?

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      SaritaSt 9 months ago

      Very interesting read and so pleased to know I am not imagining it and that others recognise this as well. I have in the last year or so realised that cooked dairy is one of the things that gives me stomach cramps, low dull back ache, makes me bloated etc and since I switched to lactofree products I have felt so much better in myself.

      I struggle when eating out and often get caught out. My job requires me to attend events where I dread the 'set menu' as I know that inevitably I will end up in a lot of pain later in the evening. I do seem to be fine drinking 'normal' cold milk and eating cold cheeses.

      It was my dad that initially helped me to realise that I was intolerant to some foods as his doctor had put him on a FODMAP diet. We both suffer after eating onions and garlic however switching to leeks (white part only) and garlic infused oil has massively helped with home cooking. Fizzy drinks like Prosecco, Tonic water etc are too harsh on my stomach and also cause upset.

      It's crazy but I thought getting bloated and cramps after eating was just the norm because onions/garlic/dairy are used in so many cooked dishes.

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      Gemma Houlder 9 months ago

      This article was an interesting read for me as I have on a number of occasions explained to people that melted/grilled cheeses makes me quite ill. I like a number of others that have commented experience griping stomach pain, hot sweats, diarrhoea, sickness and on two occasions after eating cheesey chips I have been on the verge of passing out until I could get to a loo to throw up! I can eat all other daily products and cold cheese without any reaction what so ever.

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      Hana 9 months ago

      Hi,

      I have exactly the same problem, I can have dairy that isn't melted cheese, (and also hot milk) and I suffer from excruciating symptoms when I eat melted cheese. I too have done some reading to try and figure out what's going on, I have read about the chemical structure theory you mentioned about cheese changing when melted. I work in Pathology and was discussing this with one of our scientists and he said something about the amount or lactose increasing when dairy is exposed to heat. Which I thought made sense and could be a possible theory and factor as to why we have a problem with melted cheese, because I cannot have coffee with warm milk, but an iced coffee with milk is fine... I also get post nasal drip and swollen congested sinuses when I have melted cheese and hot milk, rapidly within about 40mins after eating, but not cold dairy.

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      9 months ago

      Im guessing it has something to do with an intolerance after it is cooked. Maybe something seeps out after chemical bonds are broken? I dont throw up but I do have unsettling stomach pains. I also seem to have an issue with post nasal drip and dairy, black pepper seems to aggravate that. Not sure if there is a connection.

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      Oli 9 months ago

      I'm allergic to most cheese, raw or cooked. Thankfully the smell makes me nauseous, so I get prior warning. A tiny piece of cheese placed in my mouth still induces vomiting immediately. I can drink milk ( it does thicken my saliva though), butter can be OK if it's part of the cooking process, but I have dry bread, toast, baked potatoes and mashed potatoes without milk, butter or cream.

      Strangely I can eat some soft cheeses and some Cheese and Onion Crisps. So I can eat Cheesecakes, although the baked ones I can only eat a small portion. When I was 9 my parents finally realised that I was not being fussy. As we were in France, I had a Quiche, because my dad said it wouldn't have any cheese in. My first mouthful, I started to feel ill.

      Obviously I have become hyper vigilant with food labels, learn how to ask for "no cheese" in various languages as well. This year I'm going to try some vegan alternatives.

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      Brittany Nevin 9 months ago

      Oh my. I was just searching this topic because it seems my daughter may have the same problem. She is recently 5 and has started to have problems with certain cheeses presented in cooked form. I just left having lunch with her at school and after a few bites of a quesadilla I was almost wearing her lunch.

      She is also OK with milk as you but has turned away from uncooked cheese as well. She is OK with pizza though.

      So weird. She also has a few major signs of allergies. Eczema, occasional asthmatic issues and a body covering erythema when outside in spring and summer.

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      China 9 months ago

      My melted cheese allergy started when I was really young. I used to love eating microwave-melted cheese. Then one day, I started to develop headaches immediately after eating cheese and later it'd be followed by intense stabbing pains in my stomach. I couldn't figure out what was wrong because I could still drink milk and eat cold cheese. Cheddar soups and items with a cooked cheese ingredient such as nachos is very unsettling for my stomach. At one point my DH banned me from eating cheese because it was hurting me so much. I didn't listen because I simply love cheese. Thank you for posting this article because I thought I was going crazy being sensitive to just cooked cheese and not cold cheese.

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      Bailey 10 months ago

      I have the exact same problem with melted cheese but my dad is intolerant to all dairy, so I was really confused. I now eat lactose free cheese and I can eat as much of that melted as I want and nothing happens, you should try it. I believe a chemical is released or something with the lactose happens which my body cannot handle. Maybe it is the fat inside the cheese, I am not sure.

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      im sick from cheese 10 months ago

      i have the same problems, its happening right now. but for mine i can eat cheese with milk and butter, NOTHING ELSE! it makes me so sick if i eat cheese popcorn, those water easy macs, and cheese alone. i feel terrible and feel like throwing up. does anyone know a way to help?

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      Damien 11 months ago

      Great to find this site, always ruled out cheese,as I can take it uncooked,for my sickness, I took backed potato and melted chess @ 2 pm everything was fine until 6 pm then it seemed as if the cheese was just sitting in my stomach . Does any one have a solution to stop the sickness, I take a Cyclzine, if I find anything that helps I will post it. But for now never going to eat cheese again.

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      Anditwedz 11 months 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.

      Weird.

      Xx

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      tony 12 months 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.

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      Sharon 12 months 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 (-:

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      Penny Kirkbride 12 months 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??

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      Jessy 13 months 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.

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      Nadine 13 months 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.

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      Jhosein 13 months 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!

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      David Hughes 13 months 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!

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      ChristenLB 13 months 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?

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      Taylor 14 months ago

      Hi,

      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.

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      Ali 14 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.

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      Brittd 14 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!

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      HJWELLS 14 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.

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      Nicole 14 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 :/.

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      Phil/MN 14 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?

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      Michelle lovaas 15 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?

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      Jodi 15 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.

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      Pat 15 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.

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      E in T.O 16 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.

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      Cassii 17 months ago

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

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      Jake 17 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.

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      Tommy 17 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

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      wendy 17 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

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      Meg 18 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.

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      Kathy 19 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.

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      19 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...

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      Anne 19 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.

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      T.R 19 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.

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      lorraine 20 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.

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      Ian 20 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.

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      cazza 20 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)!

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      j_saal 20 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.

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      Londongal 21 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!

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      Gail S 21 months ago

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

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      Gail S 21 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.

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      Werner (South Africa) 22 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.

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      Joyce Alt 22 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.

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      Eloise 22 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; )

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      joy 22 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.

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      SueHurrell 22 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.

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      Diane 22 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.

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      23 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

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      Elle 23 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.

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      Samm 23 months ago

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