Ok, I trust Ray Peat. He is the only voice of reason in this world of nutrition. But as others experienced, I did have gas when eating mushrooms. Some say that it is caused by some complex sugars in the mushrooms that need to be fermented in the colon. Is it true? Anyway, after pressure cooking them and getting rid of the water, and then making them into a soup, this reaction radically diminished. I am interested to get educated on that subject.