Your immune system can theoretically develop an allergic response to just about any protein. Meat allergies are not as rare as you might think ( http://www.food-allergens.de/symposium-3-4/beef/beef-allergens.htm ). I have a family in my pediatric practice in which the mother and one of her sons has a documented (by an allergist) immediate hypersensitivity (allergic) response to beef. However, they are able to eat pork and poultry.

Yams, potatoes, eggs, and whey protein would probably have to be staples. I know a few people who are vegan "paleo" and they rely on things like hemp and tubers. I guess if they really really really want to be vegan, it's better than tofu burgers, but it always be more tolerated than optimal.

Also, wildcard, but what about insects? Grub protein powder anyone?

I used to think I was allergic to pork, but I guess my body with just recovering because now I eat it with impunity.

I've never heard of a person being allergic to meat. I suppose in theory it is possible, people are allergic to all sorts of proteins, but land animals are pretty fundamental to our evolutionary development. I don't think there exists meat allergies. I suspect any who may have been allergic didn't reproduce too successfully.

A young woman who trains with me claims to be "allergic to protein," which I found pretty hard to believe. Upon further discussion, she told me that she had been sick earlier on in her life, and her body would not process proteins like other people. I told her that I wasn't a doctor (obviously), but that if she was going to do any high-intensity workouts, she ought to consider finding some sort of protein to eat (even if it's whey protein isolate) post-workout, or she was screwing herself.

I'm not sure one would actually be allergic in the textbook sense, but I figure it could be possible to not break it down properly. My answer would be whey protein isolate.

Sounds like you'd be eating lots of eggs, dairy and almonds, assuming you can tolerate those foods. Otherwise you're screwed.

Outside of the already mentioned whey protein isolate and trying game/not common meats, I suppose I would do so sort of food allergy test and enzyme deficiency test to check which one is the issue for which meats, and what method causes the reaction (symptoms etc). I'd also want to monitor if the allergic reaction lessens or goes away with the removal of grains and the much more anti-inflammatory paleo style diet.

if its enzyme you may be able to get digestive enzymes and/or get a probiotic that contains bacteria with the DNA to produce those enzymes/digest meat (which could be transcribed into their personal gut flora's bacteria) though that may be far fetched as I can't think of one that does this off hand currently.

Also so long as they are not doing massive amounts of intense exercise though you may do better with them on a high fat diet (coconuts, avocados etc..) cause you can go as low as 10-20% of calories from protein so long as you up the fat enough.

But yeah just cause its technically neolithic doesn't = bad. The whole Idea of paleo is to eat what our bodies are designed and evolved for.

the-only-reasonable-paleo-principle is a good example.

Melissa covered it already but I'd like to add that ostrich eggs are huge, so they probably were a good catch in hunter-gatherer days, full of protein and calories. One ostrich egg has 2,000 calories alone!

What about mushrooms, perhaps crimini or shiitake? I also like Melissa's idea about bugs, I wish there was nutritional info about some of the more common ones. And I'm sure there are at least a few ethnic restaurants in bigger cities like new york that serve bugs, but how to find them if you're not in the know? Two were listed on a chowhound page for LA, but both are a bit out of the way for me. And I guess it would be even harder for your friend to find edible insects if she lives in a more rural area...

According to scratch test I am not allergic to meat. But i noticed having runny nose when i eat meat. Recently, i have noticed that i dont have this problem when i eat really fresh meat. Fresh as in the beef was bought and cooked the day the cow was slaughtered , Because, the Histadine in meat turns to histamine as time goes by. This rate of conversion is very fast in certain fishes. We should have less allergic reaction if we eat fresh meat and fish.

My 5 daughter has been tested and studied at Mt. Sinai in NYC. She is indeed allergic to beef, lamb, pork, eggs, milk, fish, nuts, beans, soy. She has had anaphylactic reactions and suffered from eczema and asthma. It really frustrates me when people say that you cannot be allergic to these things... It is sheer ignorance. My daughter nearly died from the tiniest amount of eggs. Her allergic reactions to these are severe and have always required hospital intervention. It is quite scary. There are differences between intolerances and allergies. Unfortunately people are not educated enough and think that I am some sort of crazy mom with munchausen. Our son has no issues whatsoever, but my husbands side has all the same issues, including him. Thankfully many of these allergies went away by years of shots. Has anyone had any luck with any alternative methods?

Sorry mate, but as far as I'm concerned allergic to meat = get out of the gene pool :-D

(Seafood allergies I can live with)