Exercise has many beneficial effects on the body, from boosting cardiovascular health to supporting weight loss efforts. Recent research suggests it may also protect the mind from mild cognitive impairment and decline caused by the normal aging process.

A study profiled in the Archives of Internal Medicine analyzed the exercise habits and cognitive function of nearly 4,000 German men and women ages 55 and older over the course of two years¹. Those who engaged in either a moderate amount (three times a week) of physical activity such as hiking, biking or swimming, or a high amount of the same activities (more than three times per week) showed a significantly reduced risk of cognitive impairment. Results showed that the incidence of new cognitive impairment was 5.1 percent for high-level exercisers, 6.7 percent for moderate exercisers, and 13.9 percent for those who did not exercise at all.

In another study, researchers tracked the physical activity and cognitive function of 29 men and women with mild cognitive impairment². One group was assigned to a high-intensity aerobics class, while the other completed low-impact stretching exercises. At the study's end, the individuals who participated in the aerobics program showed marked improvement in cognitive function, with women showing the most improvement.

While exercise is a wonderful and beneficial habit to develop, it's important to consult with your physician before beginning a fitness regimen, to evaluate your health status and determine which activities are appropriate for you.

As always, to your good health,
Dr. Allen S. Josephs

1. Etgen T, Sander D, Huntgeburth U, Poppert H, Foerstl H, Bickel H. Physical activity and incident cognitive impairment in elderly persons: the INVADE study. Arch Intern Med. January 25, 2010 170(2):186-93.

2. Baker L, Frank L, Foster-Schubert K, Green P, Wilkinson C, McTiernan A, Plymate S, Fishel M, Watson G, Cholerton B, Duncan G, Mehta P, Craft S. Effects of aerobic exercise on mild cognitive impairment: a controlled trial. Arch Neurol. January 2010 67(1):71-9.