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Regular exercise may offer some protection against Alzheimer's disease, even for people who are genetically at risk, according to recent research.

In the study, published in the Journal of Alzheimer’s Disease, people who did more moderate-intensity physical activity were more likely to have healthy patterns of glucose metabolism in their brains—a sign of healthy brain activity—than those who did less. Light-intensity physical activity, on the other hand, was not associated with similar benefits.

The study involved 93 adults with an average age of 64, all of whom had at least one parent with Alzheimer’s disease, at least one gene variation linked to Alzheimer’s disease, or both. This put them at high risk for developing the disease themselves, although none showed any cognitive impairment at the time of the study.

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Written by Amy Norton for CBS News