Bulletin from the medical front: Eating fast food and sitting hours on end in front of the TV are really terrible for the waistline.

As obvious as this might sound, there actually is little firm scientific data to prove the point, especially against fast food. But now a large study released Saturday shows just how bad super-sized burgers and nonstop tube time can be for one's health.

"Fast food emphasizes primordial preferences for salt and fat," said researcher Mark Pereira. "This may promote overeating."

The project did turn up one surprise: While a lot of fast food is clearly bad for white people, it seems to make no difference at all for blacks.

AP Medical