From the very first client that I saw when I started to practice in 1986, there has been an ongoing conversation in my office about the possibility of being "addicted" to certain foods, primarily foods high in sugar. This conversation continues, but is becoming louder in the scientific community. This article is a must read if you sometimes feel as if you are addicted to food.
"DiLeone, the Yale researcher, says it's still not clear how far the food-drug comparison holds up, especially in people.
"There's an ongoing argument in my field whether food is addictive or not," he says. "But whether it's addictive or not, there's probably components that are similar to addiction."
That means it makes sense to focus on eating behavior early in life, when the brain is adapting to a particular environment. It also probably makes sense to take approaches used to treat addiction and adapt them to overeating," DiLeone says."
http://www.npr.org/2010/12/01/131698228/overeating-like-drug-use-rewards-and-alters-brain?sc=fb&cc=fp