@ Syl. It would help if you say in your signature you have FM and not IBS. As you know, IBS is an exclusion diagnosis. Yes, onions might be more about...onions than fructose.
@Susie. So, you have a pseudo disease. That's beyond my knowledge.
@Gerikat. I got butterflies in my stomach after reading your post. Do I qualify now?
@ibsholly. I'm starting to believe there is no safe food list for IBS. Insoluble fiber > soluble fiber concept seems to have so many exceptions to the point being unreliable. For example, Psyllium husk is SF>IS but many cannot tolerate it.