Dr. Lilian Cheung is a lecturer and Director of Health Promotion and Communication at the Harvard School of Public Health’s Department of Nutrition. She has been a co-investigator at Harvard Prevention Research Center on Nutrition and Physical Activity, which collaborates with community partners to design, implement and evaluate programs that improve nutrition and physical activity among children and youth. She is also the creator and editorial director of The Nutrition Source, the Harvard School of Public Health’s nutrition website for journalists, health professionals and consumers.