I think this really depends on where you are. When I first developed post-infectious IBS 15 years ago, I went to quite a few Gastros who knew nothing but: scope

I think this really depends on where you are. When I first developed post-infectious IBS 15 years ago, I went to quite a few Gastros who knew nothing but: scopes, check for ulcers, tumors, diverticula, etc. - and when it all came back negative they happily declare IBS, pat themselves on the back, and tell me to destress, see a shrink, and not come back. Diet, gut flora, intermittent fasting, FODMAPs, none of those things were mentioned once.