Michael Greger was born on October 25, 1972. He is a graduate of Cornell University School of Agriculture and Tufts University School of Medicine. He writes and speaks on health issues. His subjects include animal agriculture, nutrition and human health. He promotes a vegan diet. Dr. Greger serves as the Director of Public Health and Animal Agriculture for the Humane Society of the United States and Humane Society International. He also runs the popular website NutritionFacts.org.