Dr. Robert Lustig has been a pediatric endocrinologist for 40 years and is one of the leading voices on how our modern diet of processed foods and high sugar is destroying our health. His latest book, Metabolical, connects the dots between our systems—from medical school to dietitians to even health advocacy groups—and the food that’s giving us chronic disease. Instead, he argues, we can guide our diet on two simple maxims: protect the liver and feed the gut, eating whole, nutrient-dense food.