Adding omega-3 fatty acids and other nutrients to standard antioxidant vitamins doesn't give older people any added protection against a leading cause of blindness, a new study finds. The study looked at age-related macular degeneration (AMD), which afflicts millions of older people in the United States, according to background information outlined by the researchers. The condition is "the leading cause of blindness in the developed world, [and] accounts for more than 50 percent of all blindness in United States.
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