Study: Mentally Active Sitting Lowers Dementia Risk

A new study has revealed that the nature of sedentary activities can significantly influence dementia risk, with mentally engaging pursuits like reading or office work offering protection against cognitive decline, while passive behaviors such as watching television may heighten the danger.

Researchers from the Karolinska Institute in Sweden analyzed data from 20,811 adults aged 35 to 64 who participated in a national health survey in 1997. Over a median follow-up period of 19.2 years, the team tracked participants' daily habits through detailed questionnaires on sedentary behaviors, physical activity levels, and other lifestyle factors. Incident dementia cases, totaling 569, were confirmed by linking the data to Sweden's National Patient Register and Cause of Death Register.

The study, published in the American Journal of Preventive Medicine, distinguished between mentally passive sedentary activities—such as viewing television, listening to music, or relaxing in a bath—and mentally active ones, including office work, attending meetings, reading, writing, knitting, or solving puzzles. After adjusting for variables like age, sex, body mass index, education, smoking, alcohol...