News: Life expectancy of Americans to drop?

According to a report on nature.com, the life expectancy of Americans is due to drop, because of obesity. It's the first time that life expectancy in the US is predicted to drop, so this is going to make history.
That's intresting.
Although it's about americans, but I don't think that only Americans should face the problem, other countrys around the world is adapting a greesy food life style, so these countrys might face this problem some time in the future. Beware.

So guys, watch your weight.