Give in to temptation!

Researchers have new evidence in rats to explain how it is that chocolate candies can be so completely irresistible. The urge to overeat such deliciously sweet and fatty treats traces to an unexpected part of the brain and its production of a natural, opium-like chemical.
“This means that the brain has more extensive systems to make individuals want to overconsume rewards than previously thought,” said Alexandra DiFeliceantonio of the University of Michigan, Ann Arbor. “It may be one reason why overconsumption is a problem today.”