Irritable Bowel Syndrome Message Boards

Dehydrating onions and garlic does not remove the fructan. If this FODMAP group is a problem for you then yes - onions and garlic powder need to be removed or reduced. The good news is that not everyone has problems with this FODMAP group. It is a good idea to remove all sources of onion and garlic during the elimination stage. You can try introducing later and see if they are a problem for you.

Fructans are a problem for me. The good news is that you can make garlic oil. The garlic flavor gets imparted to the oil without the fructans.

The original research article on FODMAPs (see link 2 in my signature) there is a statement often overlooked by advocates of the FODMAP approach. It says "If adherence was strict, attention may be needed to modify intake of resistant starch and insoluble and soluble fiber. Other dietary triggers such as food chemicals may need to be considered, as should potential factors such as caffeine, fat, meal size and regularity."

The answer to you question is that low FODMAP foods can still be a problem. I cannot eat red peppers with skins. I can eat roasted red peppers with the skins removed. The only tomato product I can tolerate is tomato pasta. I use a lot of it

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STABLE: ♂, IBS-D 50+ years - Science of IBS

The FODMAP Approach to Managing IBS Symptoms
Evidence-based Dietary Management of Functional GI Symptoms: The FODMAP Approach
FODMAP Chart & Cheatsheet
The Role of Food & Dietary Intervention in IBS

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