David Ludwig (physician)

David S. Ludwig (born 1957) is an American endocrinologist in Boston, Massachusetts, who is also known as an advocate of low-carbohydrate diets and a promoter of functional medicine. He received both a PhD and an MD from Stanford University School of Medicine, then completed an internship and residency in pediatrics and a fellowship in pediatric endocrinology at Boston Children's Hospital. He is a professor of pediatrics at Harvard Medical School and a professor of nutrition at the Harvard School of Public Health, and is co-director of the New Balance Foundation Obesity Prevention Center at Boston Children's Hospital. His studies address the causes of obesity in children and adults, and he has argued that severely obese children should in some cases be removed from the custody of their parents. He wrote the 2016 diet book Always Hungry and the 2018 recipe book Always Delicious, and he is a proponent of the carbohydrate-insulin model of obesity, which the article describes as not supported by good medical evidence.