Your Gut Could Be Affecting Your Mood The science of the gut–brain connection Mental-health implications Everyday influences on the microbiome What this means for treatment and prevention

Ana Maria Rus

For years, mental health was seen as something that started and ended in the brain. But an expanding field of research is revealing a key player in the story of our emotions: the gut. The trillions of bacteria that live in our digestive tract don’t just help break down food. They appear to communicate directly with the brain, influencing everything from stress resilience to symptoms of depression and anxiety. Scientists call this two-way relationship the gut–brain axis, and it’s rapidly