Thought exercise:<p>Extend a finding like this out to the (il)logical conclusion 5, 10, 15 years out -- we figure out what causes the body to store fat, we develop the wonder drug that everyone's been waiting for that 'flips the switch' (even in otherwise healthy people), and suddenly everyone has 7.5% bodyfat and weighs exactly as much as they want to.<p>And then....what? Well from a macro scale, I think some things get better -- overall population health goes up, obesity/fat-related diseases go down. But does heart disease? I wonder if it goes up -- if everyone looks like they've wanted by shutting off the body's fat stores, does the motivation to do cardio go down for some people? (Cardio has huge benefits for things way beyond your bodyfat, but that won't stop a big chunk of the population from giving up on it.)<p>And from a purely superficial angle -- now everyone who wants one has a "ripped" body. But some guys are still bald, or have back hair, or or or. We'll still find a way to feel bad about ourselves, even with six-packs.<p>Thoughts?