>FODMAP
Until this link, I'd never heard of it. Good one, Trav.
>short-chain carbohydrates, including lactose, fructose
Ding! Ding! Ding! We have a winner! Note my recent posts about fruit --I can't do fruit too much. The noticeable exceptions are the few fruits that are lower in carbs; strawberries, blueberries, and maybe a few others. I am not lactose-intolerant -I can eat cheese by the pound- but sugary lactose (ice cream) is almost a surefire way to set off the pain. I'd also noticed a correlation with some artificial sweeteners but didn't take time to explore which ones caused the problem, I just avoid them in general.