'Social intervention help bees reverse their brain ageing'

"We knew from previous research that when bees stay in the nest and take care of larvae -- the bee babies -- they remain mentally competent for as long as we observe them," Gro Amdam, who led the research at Arizona State University, said.

"However, after a period of nursing, bees fly out gathering food and begin aging very quickly. After just two weeks, foraging bees have worn wings, hairless bodies, and more importantly, lose brain function