In a study conducted at the Department of Ophthalmology at the Utah School of Medicine, 151 patients with
macular degeneration received either 100 mg of zinc or placebo. Those receiving zinc had significantly less loss of
vision.19 The study period was 12-24 months. These results were not confirmed in a more recent double-blind
study of 112 patients.20
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Meschino Health Comprehensive Guide to Minerals