Researchers at the Cooper Institute report that individuals in the highest quintile of cardiorespiratory fitness at age 50 had a 36% lower risk of dementia after age 65 when compared to those in the lowest fitness group. This finding is based on an analysis of almost 20,000 individuals. While this study did not prove that fitness prevents dementia, it is certainly plausible, as fitness reduces other known risk factors such as diabetes and hypertension.
PositiveTip: Keep up those fitness activities! It lowers known risk factors and may help prevent dementia, also.