Brain Health

Your Physical Fitness Age vs. Chronological Age Predicts Depression and Dementia Risk

A study of 2,207 Chinese adults aged 60 and older found that people whose physical fitness age exceeded their chronological age by more than 2.5 years were significantly more likely to experience depression and cognitive impairment. Physical fitness age was calculated using grip strength, walking speed, lung function, and chair-stand performance. Those aging faster physically had nearly double the odds of depressive symptoms and nearly double the odds of cognitive impairment compared to normal agers. Women showed especially stark cognitive vulnerability — their odds of cognitive impairment when physically accelerated were nearly four times higher. On the positive side, those whose bodies were biologically younger than their years had 77% better odds of being free from chronic disease. The findings highlight physical fitness as a powerful, measurable marker of brain and mental health in aging.