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Zinc supplementation supports mental performance in children, according to a presentation made at the Experimental Biology meeting recently in San Diego. In the study, 111 girls and 98 boys, age 11, consumed 4 oz. of fruit juice containing either 0, 10 or 20 mg of zinc gluconate each school day for up to 12 weeks. All took a battery of tests designed to measure mental and motor skills at the beginning and end of the study. Compared to those who received no supplemental zinc, students who consumed an additional 20 mg daily saw a significant increase in mental performance. Those taking 10 mg of zinc saw little change in performance.
U.S. Agricultural Research Service Human Nutrition Center