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.
Scientists from the Monell Center report that seven of 12 related mammalian species have lost the sense of sweet taste. As each of the sweet-blind species eats only meat, the findings demonstrate that a liking for sweets is frequently lost during the evolution of diet specialization. Previous research from the Monell team had revealed the […]