
Mental Engagement in Sedentary Time Could Cut Dementia Risk, 19-Year Study Finds
A 19-year Swedish cohort of 20,811 adults found that mentally passive sedentary activities (like watching TV) are linked to higher dementia risk, while mentally active sedentary activities (reading, office work) are linked to lower risk; replacing passive time with active sedentary time reduces risk; results suggest not all sitting is equally harmful and that keeping the brain engaged during sedentary periods may help protect cognition, though causality cannot be established and trials are needed.












