Ever feel like you just can't stop eating junk food no matter how much your willpower tells you to stop for the love of Pete? Yeah, I know the feeling. But don't feel too bad about it -- it might be in your genes.

A version of a gene called FTO is believed to cause some people to eat, on average, 100 extra calories per meal. And now for the really unfortunate news: It's estimated that two-thirds of us are affected by FTO. And those with it are 30 percent more like to be obese. No wonder -- those extra 100 calories can really add up -- to about 2,100 calories a week to be precise.

The good news? This gene discovery could help scientists figure out just how to control this obesity epidemic of ours. A pill that would allow me us to eat as much chocolate cake a la mode as we want without gaining a pound sounds pretty perfect, don't you think?