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The Zinc Effect

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Read more about the research of James G. Penland, a psychologist at Grand Forks Human Nutrition Research Center.

Increasing zinc intake improves the mental performance of adolescents, concludes a study conducted by the U.S. Department of Agriculture’s Human Nutrition Research Center in Grand Forks, N.D.

In a study of 209 7th graders in Grand Forks, daily consumption of 20 milligrams of zinc boosted students’ performance on visual-memory tests, word-recognition tasks, and activities requiring sustained attention, according to James G. Penland, the researcher at the Grand Forks center who led the study.

Vol. 24, Issue 37, Page 10

Published in Print: May 18, 2005, as The Zinc Effect

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