Physical activity can reduce the risk of death, stroke and some cancers, and some studies suggest activity can also lower the risk for depressive symptoms. But the evidence on activity and depression has limitations.
The authors examined whether depressive symptoms are concurrent with physical activity levels, as well as whether activity influences the level of symptoms and if the level of symptoms influences activity. The study used data from about 11,000 participants in a 1958 British birth cohort where participants were followed to age 50 years. Information on depressive symptoms or physical activity frequency was available at 23, 33, 42, or 50 years of age.
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