David Ludwig is a prominent American endocrinologist and researcher known for his work in the fields of obesity and diabetes. He is a professor at Harvard Medical School and serves as the director of the New Balance Foundation Obesity Prevention Center at Boston Children's Hospital. His research focuses on the biological and environmental factors that contribute to obesity and metabolic disorders. Ludwig has authored numerous scientific articles and books, including works aimed at the general public about nutrition and health. He advocates for a comprehensive approach to tackling obesity, emphasizing the importance of dietary choices and lifestyle changes in promoting overall well-being.