Why Gut Health Matters for Fat Loss When most people think about weight and body fat, they focus on calories, exercise, or metabolism. But one factor often overlooked is gut health. Your gut is home to trillions of bacteria—collectively known as the gut microbiome—that play a major role in how your body stores fat, processes nutrients, and even regulates hunger. A healthy gut doesn’t just help with digestion; it helps your body maintain balance, reduce inflammation, and manag