The Cause of Depression Can be Found in Your GutSounds like a joke, but it's not. Who would assume that the organ of our body with greater influence on diseases such as depression or anxiety, just after the brain, would be the intestines? Or rather what we call the gut, and that goes from the stomach to the rectum?Depression is still a disease with many unknowns as to its causes, its treatment and its recovery process, and so several studies have tried to analyze in detail what affects our brain to fall into that state. And some of them have suggested the surprising conclusion that the key (or one of them) is in the digestive system.