Cathy Nonas directs the New York City Health Department's Physical Activity and Nutrition program. Trained as a clinical dietitian, she has spent years working to combat Type 2 diabetes, both as a researcher at the federally funded Obesity Research Center and as an assistant clinical professor at Mt. Sinai School of Medicine. Since joining the Health Department two years ago, Nonas has worked on policy initiatives to increase physical activity for young children and improve access to healthy foods in underserved neighborhoods. She helped develop New York City's calorie-posting regulation, and has been instrumental in the NYC Green Cart initiative, an effort to expand the number of mobile food vendors selling fresh fruits and vegetables