For Cari Banks, one of the hardest things to say no to is food.
"I could eat half a pack of Oreos and milk and consider it nothing," she said. "I would eat it, pretty much without thinking."
But new research shows Banks' sweet tooth could actually be more like substance abuse.
Dr. Joe McClernon at Duke University studies the brains of people who are addicted to drugs, such as the nicotine in cigarettes. He says that for many obese people, junk food can trigger the same response in the...Full Story