Hillary says she weighed almost 300 pounds, but stopped weighing herself because it was too depressing and that she was in denial of her addiction.
A recent study in Canada found as many as 1 in 20 people could be addicted to food.
Dr. Pamela Peeke, Hillary's doctor, said, "Sugary, fatty, salty food combinations that actually hack into the reward center in your brain cause changes that literally leave you addicted to that food."
Dr. Peeke says treating patients with food addiction is a little trickier than treating patients with substance problems, because you can't simply stop eating. She discovered that refined sugars were triggering Hillary's overeating. Hillary cut them out of her diet and lost weight.
Hillary is in recovery now, getting support from other over-eaters in a program for food addicts.