Psychobiotics are live beneficial bacteria that can help improve mental health when consumed in the right amount. They work by interacting with the bacteria already present in our gut and communicating with the brain. This communication happens through the gut–brain axis, which connects the gut and the brain using nerves, immune signals, and metabolic pathways. Through these pathways, psychobiotics can influence brain functions, behavior, mood, and stress response. At the same time, they also improve gut health. Research shows that certain psychobiotic strains can reduce inflammation and lower cortisol levels, which helps decrease symptoms of anxiety and depression.