I slowly realized in college that I was lactose intolerant. The symptoms are quite obvious, but I had always drank milk and eaten ice cream, and halfway thought

I slowly realized in college that I was lactose intolerant. The symptoms are quite obvious, but I had always drank milk and eaten ice cream, and halfway thought that I just would always have stomach problems. Doctors can test you for it, but the ones I've spoken with have always said "it sounds like a pretty clear cut case" and never suggested the test. I roll my eyes at the sheer quantity of people avoiding gluten, but if your symptoms are really overt[1] and the difference was that quick, I'm not going to question you. I'm bothered by people who are 80-20 gluten free or can't point to any concrete issues, because I suspect they are attaching themselves to a fad. And I'm bothered by people with serious symptoms being diagnosed by chiropractors. I think that level of random speculation is often not just pointless, but potentially harmful. [1] You didn't say what they are, beyond energy, but I'm trusting your judgment here.