I've noticed several references to this diet on various threads and thought it might be useful to share my experience.
I was advised to try this diet out by my Gastroenterologist after experiencing digestive symptoms caused by atrophic gastritis (due to B12 deficiency Pernicious Anaemia) FODMAP is basically is an EXCLUSION diet and should really be attempted whilst being supported by a dietician.
You cut out foods that are known FODMAPs i.e. foods that can ferment in the digestion process and cause lots of gas and discomfort. When these are excluded you then start adding them back into your diet, one at a time, over a period of time and note down any impact on your symptoms.
I think we can all name a particular food that we know causes us symptoms. In my case it was definitely pulses, including my favourite chickpeas. It was no surprise to me to see these were labelled FODMAP.
I didn't go the whole hog and exclude all FODMAPs as I was pretty confident that I knew most of the foods that affected me. I now keep these out of my diet and also reduce the amount of dairy I eat. Moving to lactose free milk to have with my various cups of tea.
I've noticed a big improvement with symptoms. If you have a more extreme problem, and know that many foods cause you discomfort, you may want to discuss with your GP being referred to a dietician who can support you through the FODMAP diet process.
Here's a link to our FODMAP board on Pinterest that you might find useful
If you're not used to Pinterest you just click on the picture to go to the web page it was pinned from. You can also leave a comment beneath the pics.