So reading on here, quite a lot of people on here have significant gut symptoms along with the fatigue etc. certainly bloating, discomfort, constipation, IBS are common. It also seems well recognised that problems in the gut can lead to systemic problems - for instance with the immune system ( e.g. via gut permeability) and with the CNS. Quite a lot of sufferers also report improvement in symptoms if they restrict certain foods and in particular carbohydrates. Eg Ketogenic diet The general hypothesis seems to be that these undesirable effects are mediated by the gut bacteria in some way and that reducing the amount of starchy carbohydrates in the diet reduces the available food for these organisms thereby reducing their numbers and activity, and thereby reducing the symptoms. I may have oversimplified the above but my question is: If reducing food for these bacteria seems to help many people, what about fasting altogether for extended periods? ( the gut lining replaces itself in as little as 4 weeks so perhaps a rest from all food for 1-2weeks could allow it to heal and speed recovery) There has been some interesting trials on fasting even for 5 days at a time for addressing metabolic disorders and even reducing auto-immune reactions, which I think many of us have also. Natural healers also do recommend fasting for periods of up to 2 weeks for the treatment of mysterious illnesses with gut symptoms that do not respond to other approaches. I know that is very strenuous so would not suggest taking it on lightly – but living with this disorder for years on end is strenuous, expensive and has a major impact on every area of your life, so I would certainly consider it. Has anyone here tried water only fasting for a week or more - and if so – would you be able to share your experience? What was your diet and health before? How was the fasting and for how long? What was the outcome?