“How to Heal Skin Issues by Optimizing Your Nutrient Status and Fixing Your Gut” features Mark Hyman (MD) revealing why acne, eczema, and other skin problems often start deep in the gut. He shares how poor digestion, nutrient gaps, inflammation, and food sensitivities like dairy or gluten disrupt skin health. With personal examples and practical steps—covering diet, detox, supplements, and gut repair—Dr. Hyman explains why lasting skin healing depends more on biology than on creams or prescriptions.