Most of us only think about our gut when something goes wrong. But the trillions of microbes living in your digestive tract are quietly shaping far more than digestion, from how your immune system behaves to how your body handles blood sugar. Gastroenterologist Dr. Will Bulsiewicz, author of Fiber Fueled, came to this work the hard way. Early in his career he was overweight, anxious, and dealing with high blood pressure, and changing how he ate turned it around. On A Whole New Level, he explained how the gut works and what actually helps.
