Your gut bacteria play a surprising role in heart health through a communication network called the gut-brain axis. When the balance of gut bacteria is disrupted (dysbiosis), it can lead to heart disease, high blood pressure, and clogged arteries. Beneficial bacteria produce helpful compounds like short-chain fatty acids that reduce inflammation and protect blood vessels, while harmful bacteria produce compounds that increase heart disease risk. Simple interventions like eating more fiber, taking probiotics, managing stress, and exercising can help maintain a healthy gut microbiome and improve heart health.