Beta-carotene prevents cognitive decline.
Comment: Oxidative stress contributes to brain aging. Because beta-carotene is an antioxidant, it has the potential to slow the aging process, thereby slowing the normal decline in cognitive function. The results of the present study indicate that long-term beta-carotene supplementation prevented cognitive decline, but short-term supplementation did not. Smokers should not take beta-carotene supplements, because this compound has been shown to increase the incidence of lung cancer in smokers. It is probably best to obtain beta-carotene mostly from foods (i.e., fruits and vegetables) rather than from supplements, because foods that contain beta-carotene are also rich in many other beneficial nutrients.
Grodstein F, et al. A randomized trial of beta carotene supplementation and cognitive function in men: The Physicians' Health Study II. Arch Intern Med. 2007;167:2184-2190.
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|Title Annotation:||Literature Review & Commentary|
|Author:||Gaby, Alan R.|
|Article Type:||Brief article|
|Date:||Apr 1, 2008|
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