mom2maxandcharlie,
Not really. When I have general check-ups, nothing nutrition-related in the bloodwork is off aside from high cholesterol and occasional borderline anemia. Nor have I ever had any digestive issue requiring medical attention apart from dehydration needing IV fluids due to stomach flus (only 2x, one of then during pregnancy).
There is a link between bronchiectasis and inflammatory bowel disease (also rheumatoid arthritis), so I suspect my stomach issues are more along those lines.
I go 4-5 times a day and cannot eat certain foods without violent bathroom trips. Also, I eat a lot to have a bmi around 19. I can eat fat just fine though, unless it is pepperoni or bacon. For me the issue is, I believe, a sensitivity to a bacteria that maybe other people are fine with? I donno. I just cannot eat lukewarm food from restaurants, Starbucks, salad bars, you name it, I get cramps and have to dash into whatever public bathroom might be available and hang out for while there. I also just empty out when I overeat, which happens because I get really hungry from emptying out. Makes sense...so when I am thoughtful, I graze steadily.
Sorry that was TMI, I think I am pondering the issue as I type.