Shout out to the low-FODMAP diet. I did that last year after having several months of abdominal pain and discomfort, and was stunned at how quickly a change in diet could solve these seemingly chronic symptoms. At the end of the second day I told my wife I couldn't remember the last time I felt so good. I'd recommend trying it for a few days to pretty much anybody, because doing it can't hurt, and who knows? It might make you feel better. It's not intended to be a long-term thing anyway, more of a diagnostic tool to help you learn about your body.