Another benefit? Learning to experience boredom and respond to it thoughtfully often spurs on great bursts of creativity, said Heather Lench, a professor of psychological and brain sciences at Texas A&M University.

“What we’re showing is brain ageing can be reversed, to help people stay mentally sharp, socially engaged and free from age-related decline,” research author Dr Ashok K. Shetty told Texas A&M University.

This is significant, Dr. Katie Jo Light, a clinical assistant professor at the Texas A&M University College of Medicine, told HuffPost, as it “challenges the assumption that plant-based diets must be ‘clean’ or minimally processed to be effective.”