How about a post discussing the news that gastric bypass surgery works not by decreasing the size of the stomach but by regulating your hormones so you aren't as hungry, and comparing this to the hormone regulation attained through lifestyle change?

Change your stomach, change your brain - health - 23 May 2012 - New Scientist (requires free registration)
Weight-loss surgery reduces desire for alcohol - health - 24 May 2012 - New Scientist