Exercise can help the heart, lower the risk of diabetes, keep blood pressure in check and help you maintain a healthy weight. But researchers say you shouldn’t expect it to keep your brain alert.
In a study published in JAMA, Dr. Kaycee Sink, director of the memory assessment clinic at Wake Forest Baptist Medical Center and her colleagues come to the somewhat surprising conclusion that exercise doesn’t help elderly to maintain their brain function. Previous studies that found people who were more active documented less decline in mental abilities over time. And the theory behind the relationship made sense — physical activity can improve circulation and keep brain neurons nourished and fed with the nutrients they need to keep working properly.
But when Sink and her team put the idea to the test with a group of 1,635 elderly, sedentary people aged…
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