Many years ago I took a food intolerance test... At the time, this was new information to me but the suggestions were amazing and absolutely benefited me, as well as many others... It was a hair analysis test and the people doing the test turned out to have great knowledge in certain areas of nutrition.
It turns out: Most things people are intolerant to are either hybrid or not made for humans naturally.
In the food intolerance test it mentioned intolerance to wheat, milk, nightshades and a few other things :
Milk (this is for baby calves anyways, the sugars (lactose) is bigger and not recognisable to humans although some people can digest some of it for a little while, but in general it is inflammatory) The proteins in milk are also too big and not easy for the body to recognise, again inflammatory.
Wheat: very hybrid
Nightshades: This is a plant family with few edible species compared to how many of their plant species are not edible, and some of the ones served today are bred so much people can tolerate them, and those that people could tolerate better earlier in a less hybrid state are so hybrid now that they are inflammatory, as soon as a potato grows green sprouts it´s common to say it not edible, because the potato is not a very edible plant. That´s why bugs try to removes it. Wild natural plants are much more protected from bugs and humans tolerate the edible ones much better. Nighsthades are very inflammatory food class in general, although there are benefits like getting some healthy sulphur, c vitamins etc, but this can be gotten from other plant based food groups.
Eggs: This is supposed to become baby animals when fertile, inflammatory.
And a few other foods like onion, which is a hybrid root anyway. the sulphur in onion has some anti-microbial properties and can make fat more soluble and easier to digest so there is some benefit, but it is inflammatory for the intestines, eating enzymatically activated fat and getting sulphur from other plant food sources is better.