There is no single diet that “fixes” chronic fatigue syndrome. And anyone telling you otherwise is oversimplifying a very complex condition. What we see again and again is that extreme diets — fasting, keto, carnivore, restrictive vegan, cutting carbs often make people worse, especially when capacity is already low. Not because food doesn’t matter. But because under-fueling a stressed nervous system adds more load. What actually helps most people with M.E/CFS isn’t a diet. It’s a way of eating: