I was a little ahead of the curve on this: I figured it out going on a strict keto diet in furtherance of my hobby of picking up heavy things (then putting them

I was a little ahead of the curve on this: I figured it out going on a strict keto diet in furtherance of my hobby of picking up heavy things (then putting them down again). I couldn't believe how good I felt, even on a diet of nothing but tuna and water. When I added things back to my diet; milk, rice, beans; all no problemo. First time I ate spaghetti, I went back to feeling like dirt. The internets informed me that other people were sensitive to wheat as well (this was around ~ 2004), and I haven't looked back since then.