The adult intestine contains 100,000 billion bacteria weighing more than 1.5 kg. It's no wonder these tiny creatures can affect us! But to what extent do we depend on them? Depression, stress, hypersensitivity, burnout, bulimia, anorexia, Alzheimer's and Parkinson's diseases, autism... Aren't these diseases and disorders related to the state of our microbiota? Professor Gabriel Perlemuter, head of the research group on intestinal microbiota, macrophages and liver inflammation, will talk about the revolutionary discoveries of recent years and give recommendations for caring for our bacteria, based on extensive medical practice. “Bacteria are - you will soon see this - the conductors of our orchestra of emotions, behavior, our diseases. What if they are at the source of some of our talents, at the source of our individuality? Our strengths and our weaknesses? Will we ever find evidence that a pianist became a virtuoso because his bacteria contributed to it? I'm close to thinking it's possible." (Gabriel Perlemuter)