Obesity in US Will Lower Life Expectancy

"It's been assumed that U.S. life expectancy would rise indefinitely, but a new data analysis...suggests that this trend is about to reverse itself -- due to the rapid rise in obesity, especially among children...More ominously, the researchers further conclude that if the current epidemic of child and adolescent obesity continues unabated, life expectancy could be shortened by two to five years in the coming decades."
From Science Blog