According to a new study that looked at the effects of beta-carotene supplements on the cognitive abilities in nearly 6000 men over an average of 18 years, long term use of beta-carotene supplements may preserve memory and other thinking skills.
However, it was stressed in an accompanying editorial, that other studies into beta-carotene supplements had shown contrasting results. One study has suggested potential harm from taking beta-carotene in pill form.
Source : "A Randomized Trial of Beta Carotene Supplementation and Cognitive Function in Men: The Physicians' Health Study II" Arch Intern Med. 2007;167(20):2184-2190.
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