Mentally Active Versus Passive Sedentary Behavior and Risk of Dementia: 19-Year Cohort Study

Mentally passive sedentary behavior may increase the risk of dementia. Replacing passive with mentally active sedentary behaviors or with physical activity may reduce the risk of dementia in older adults.

I spend most of my day reading, thinking, and writing, and I engage in vigorous exercise several times every week, so perhaps I don't have to worry too much about developing dementia according to this interesting study. But even if the study is faulty—its limitations are discussed in the paper—dementia is not on my list of concerns. I'll think until I die. As the Moody Blues once sang, "Thinking is the best way to travel."

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