I commend to you this article on The Delano Report (drzarkov.com) about how food addiction, "considered fringe just five years ago, is fast becoming a mainstream view among researchers as new studies in humans confirm initial animal findings, and the biological mechanisms that lead to 'junk-food addiction' are being revealed."

It references research from many of the folks on my book's resources page, including Nancy Appleton, Eric Stice, Mark Gold, Bart Hoebel, Gene-Jack Wang, and Kelly Brownell. As much as anything, their inclusion helps me to know I'm following the right people.

If you want to be caught up on the scientific side of the question, this is the article to read.