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[A] The following conclusions are supported by good evidence:
Good quality evidence from randomized control trials have found no benefit in the use of supplemental high dose antioxidant vitamins (beta-carotene, vitamin E) in preventing the development or slowing the progression of cataracts in well-nourished or undernourished populations.
Good quality evidence from prospective cohort studies suggests that high dose vitamin C supplementation (1000 mg/day) may increase the risk of