Animals use their sense of smell to navigate the world—to find food, sniff out mates and smell danger. But when a hungry animal smells food and a member of the opposite sex at the same time, what makes dinner the more attractive option? Exactly what is it about the odor of food that says, “Choose me?” Research by investigators at Harvard Medical School illuminates the neurobiology that underlies food attraction and how hungry mice choose to pay attention to one object in their environment over another. In their study, published March 3 in Nature, Stephen Liberles and co-author Nao Horio, identified the pathway that promotes attraction to food odors over other olfactory cues.
