Ideally you should use FODMAP as an elimination diet to determine what food's you react to. I went though it a couple of years ago and discovered that onions (and large amounts of garlic) will give me IBS symptoms. I'm fine with everything else on the FODMAP list. I know others that have discovered they are sensitive to fruits such as apples, pears, etc.

I don't know anyone who has stuck to a strict FODMAP diet long-term.