Patti Neighmond, health policy correspondent, NPR
Dr. Lynn Silver, director of the office of science and policy, New York City Department of Health and Mental Hygiene
Dr. Dariush Mozaffarian, associate professor medicine, Brigham and Women's Hospital and Harvard Medical School
Many health-conscious Americans are obsessed with one thing: calories. The nation's new health care law will soon require chain restaurants to display calorie information on menus. But many of those counts are off by hundreds of calories. And even accurate counts rarely change the way we eat.