'Reward Chemical' in brain may help the onset of obesity

In a recent study that looked at the causes of obesity, the conclusion was that dopamine (a "reward" type of brain chemical) does indeed play a role in obesity.

This makes sense, as I've seen and hear hundreds of people that sound like they're getting a drug fix when munching on that cheeseburger or ice cream. In fact, I'll go as far and say that some folks sound like they have a "sex" response to some foods. At least, it's sounded that way to me from my observations.

Genetically obese rats were found to have lower levels of dopamine D2 brain receptors in their brains cells compared to lean rats in this most recent study from the U.S. government's Brookhaven National Laboratory.