Almost one in five children under seven is overweight and more than seven percent are obese, according to a study of the Chinese National Task Force on Childhood Obesity, presented at the sidelines of the annual meeting of the World

What's more, smokers tend to quit in groups and those who don't stop puffing increasingly find themselves pushed to the edge of their social circles, the researchers found. "Your smoking behavior depends upon not just the smoking behavior of the

The Get Active Challenge program, online at http://www.getactivechallenge.org/, allows users to create individualized plans, track their progress, and get friends, family and neighbors involved, Colleen Doyle, director of nutrition and physical activity at the ACS in Atlanta, told Reuters Health.