Quote: In summary, if we are not 'used to' wheat yet and need more time why are people becoming less able to eat it than previously and not more adapted to it? It is true for both wheat and dairy that humans have become less able to handle them over time and not more so. Does it not seem more reasonable that there are deeper reasons why so many people have GI problems now a days?
We don't know how intolerant of wheat people were a couple hundreds/thousands years ago. Humans definitely pay more attention to their health nowadays when we have more sophisticated health care system and diagnosis means. I believe back then people were more used to being sick, they just took it as a natural part of their lives. They also had a much shorter life expectancy. Every little village used to have herbalists who devoted their lives to finding healing herbs for different illnesses, and a lot of them were targeted to the GI tract. So that proves that people were always having GI problems, they just didn't know whether it was IBS, or CD, or Crohn's or UC, or gallbladder problems, etc. I think the problem with seeing whether wheat is the problem is the delayed reaction time. Even nowadays many people don't link their problems to wheat, just because it's not an immediate reaction such as with peanut allergy, plus "everybody eats wheat so it must be fine". It took me forever to figure out that wheat/gluten bothers me, with all the information available to me - how would someone know this a couple centuries ago?