Teen obesity can stem from kindergarten

Researchers followed a randomised group of 7738 children, drawn from schools across the US, who started kindergarten in 1998.

Children were measured annually for weight and height until the age of 14, in 2007.

Of these children, 12.4% were obese when they started school and 14.9% were overweight.

By the eighth grade, 20.8% were obese and 17% were overweight.

Furthermore, while the prevalence of obesity increased with age, incident