Oprah Winfrey has opened up about her weight gain, and her trainer Bob Greene has been right behind her in discussions about the emotional reasons for his famous client's issues with food abuse. However, for many people there's more to weight relapse than having an unbalanced life, and Greene gives some insight into the science of regaining unwanted weight.
Research has shown that a brain deficient in dopamine receptors could be more susceptible to weight relapse. Eating raises dopamine levels and makes some people desire more food, and overeating often occurs because it takes more food to reach a the same level of satisfaction when the brain lacks normal levels of dopamine.
Greene says that if you suspect that your dopamine levels are off, seek out sources of pleasure other than food and avoid any food that tends to trigger overeating. He recommends "hanging out with people you enjoy" and exercise as healthy alternatives to raise dopamine levels.