How Old Is Your Brain? This AI Can Tell You

Delaying "brain age" may sound like the latest quick-fix gimmick on a late-night infomercial, but the science underlying the concept is very real. Rather than reflecting the average functional state of your chronological age, brain age looks at how well your brain is aging relative to how many birthdays you've celebrated. We all know people that seem sharper and act much younger than their age--that incredulous moment when you realize the 40-year-old you've been chatting with on the plane is actually a grandma in her 70s. Brain age, as a concept, hopes to capture the biological intricacies behind that cognitive dissociation. Longevity researchers have increasingly realized that how long you've lived isn't the best predictor of overall health.