The gut and the brain share a bi-directional relationship, which means caring for both is crucial for overall wellbeing. But according to Dr Emily Leeming, a microbiome scientist and author of the new book Genius Gut: The Life-Changing Science of Eating for Your Second Brain, there are some everyday habits that could be stopping us all from making the most of this connection. Below, she talks us through six common ones to keep in mind, and explains the simple changes which could make all the difference.