Funny how we always think of the brain being in charge of the body when it can become so evident that the gut has such a dramatic effect on the brain. An obvious example of this is the effect of alcohol or any drug influencing on how we experience, think and behave. But gut goes deeper than that. ‘You are what you eat’ may sound trite but from a brain point of view it is often immediate. Food taken into the gut can have an almost instant effect on behaviour as with sugar high-lows or the cure of some protein. I have a feeling that we have always known this but have forgotten it in our urgent, overcrowded lives, and in our over-influenced society where adverts and algorithms can so easily take over from our gut instinct.