Dieting now makes you gain weight. How'd we get here?

S.F. Chronicle reports:

It's January, then it must be time to diet, right? You've spent the past month at the buffet trough. Now every time you turn on the TV news you're seeing that same person with a three-story midsection jiggling past, head discreetly out of the picture, an illustration of that same statistic: 63 percent of us reside in the fatosphere.