Researchers at USC used machine learning to explore the links between sedentary behavior and dementia, finding that the total time spent sedentary matters for brain aging.
Adults aged 60 and older who spend more time engaging in sedentary behaviors like sitting while watching TV or driving may be at increased risk of developing dementia, according to a study by USC and University of Arizona researchers.
Their study showed the risk of dementia significantly increases among adults who spend over 10 hours a day engaging in sedentary behaviors like sitting — a notable finding considering the average American is sedentary for about 9.5 hours each day.
The study, published in JAMA, also revealed the way sedentary behavior is accumulated over the course of the day didn’t matter as much as the total time spent sedentary each day. Whether spent in extended periods spanning several hours or spread out intermittently throughout the day, total sedentary behavior had a similar association with dementia according to study author David Raichlen.
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