Wasn't garlic one of the things that made her have a massive cry because she couldn't buy ready made fodmap diet friendly food in Tesco? Yet, two weeks later, she's lathering garlic oil on potatoes?
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IBS and fodmap is a bit more difficult than that. Garlic (and onion) is high fodmap and usually one of the items most people can’t have. Garlic oil, however, is often
not high fodmap (depending on how it’s made). The same goes for broccoli, where the stem is high, but the top part is lower, and tender stem broccoli is the exact opposite. But people respond very differently to some of the items, and that’s why you should follow the elimination diet as precisely as possible. Which means no alcohol or fizzy drinks, and it is better to make everything from scratch so that you can ensure everything is low fodmap. This is mostly where Katie goes wrong (especially if the fizzy drinks contain artificial sweeteners etc.) and why you should do it with the guidance of a dietitian.
My main triggers are onions and garlic (but can have some if I don’t ‘stack’ with other high fodmap items, such as in a curry with legumes, broccoli/peas/cauliflower), chickpeas, apples and beer. Too heavy and/or large meals are also a no-go for me. This is pretty normal for people with IBS.
There is also a closer relationship between the digestive system and what goes on in your head than most people think, and high stress, anxiety etc. usually trigger a reaction. This is why many people, also individuals who don’t have IBS, get a nervous stomach. If I can keep my stress levels/anxiety in check, I usually have few IBS symptoms.
In addition to this, exercise is extremely important and jeans/clothes shouldn’t be too tight on the stomach. A high water intake is important, and meals should be eaten regularly/with regular intervals. I can also assume she doesn’t get enough fibre in her diet.
Sorry for the long rant, haha. But the
TLDR is that the elimination diet should be done as precisely as possible, which Katie doesn’t seem to do. But the elimination of triggering foods isn’t a solution in itself, and should often be accompanied by lifestyle changes.