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Antioxidants improve cognitive function and memory
In one long-term study, 4,447 healthy French men and women, aged 45 to 60, took a daily combination of antioxidants or a placebo for nine years.

The antioxidant supplement contained 120 mg of vitamin C, 6 mg of beta-carotene (equal to 10,000 IU of pro-vitamin A), 45 IU of vitamin E, 100 mcg of selenium, and 20 mg of zinc.

Five years later, researchers measured cognitive performance in six memory and decision-making tasks. Compared to the placebo group, the antioxidant group had better cognitive function, including 39 percent better long-term memory.

In a subgroup of non-smokers, those who took antioxidants had 33 percent better word recall than the placebo group and among those who began the study with low levels of vitamin C, word-recall improved seven-fold.

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