Leptin is the Homer Simpson hormone.
That's the finding of scientists at Cambridge University. Leptin is what makes up feel full after we eat a meal, but these scientists have discovered that it also affects the pleasure zone of our brain. In short, if you don't have enough Leptin, it can cause you to overeat. People who didn't have enough leptin were shown pics of pizza and cake. Their pleasure centers went off. People who had enough leptin only had this happen when they were actually hungry.
This could give a huge boost to doctors and others who are trying to find ways to battle obesity.
[via TV Tattle]
This sounds like something Homer Simpson would have a wet dream over. 
Cakes so amazing they'd be hard to cut into
Fruit juice: An invitation to diabetes?
Morbid thoughts? Have a cookie
