Sugary Soda Identified As Obesity Culprit, Scientists Say

This actually explains alot:

Americans have sipped and slurped their way to fatness by drinking far more soda and other sugary drinks over the last four decades, a new scientific review concludes.

An extra can of soda a day can pile on 15 pounds in a single year, and the "weight of evidence" strongly suggests that this sort of increased consumption is a key reason that more people have gained weight, the researchers say. Read More.