There have been a few studies on probiotics. Besides that I think not much is known scientifically. But I think the best way is to realize you are free to expe

There have been a few studies on probiotics. Besides that I think not much is known scientifically. But I think the best way is to realize you are free to experiment with your diet - with careful tracking of your diet, you may be able to find certain foods that work great or certain foods that make you feel worse etc. You can run an "n of 1" experiment on yourself and see what works. No need to wait for a study/evidence because its not coming anytime soon.