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GRAND FORKS, N.D. (AP) - Zinc improved the memory of seventh-graders who took part in the research, a study found. A total of 209 of them were involved in a study at the federal Human Nutrition Research Center in Grand Forks from 2002 through 2004.
James Penland, the project's lead researcher, said students who were given 20 milligrams of zinc a day with a glass of orange juice performed better in recalling information than students who were given 10 milligrams or students given a placebo with no zinc.
Penland, a research psychologist, launched the study to help the government determine recommended daily allowances for adolescents, most of which are based on research involving adults.
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