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Study evaluates effect of different supplements on reducing risk of progression to advanced AMD
Date:5/5/2013

In a large, multicenter, randomized clinical trial that included persons at high risk for progression to advanced age-related macular degeneration (AMD), adding the carotenoids lutein and zeaxanthin, the omega-3 fatty acids DHA and EPA, or both to a formulation of antioxidant vitamins and minerals that has shown effectiveness in reducing risk did not further reduce risk of progression to advanced AMD, according to a study published by JAMA. The study is being released early online to coincide with its presentation at the Association for Research in Vision and Ophthalmology annual meeting.

"Age-related macular degeneration, the leading cause of blindness in the developed world, accounts for more than 50 percent of all blindness in United States," according to background information in the article. In 2004 it was estimated that 8 million individuals had intermediate AMD and approximately 2 million had advanced AMD, with no effective proven therapies for atrophic AMD. "Without more effective ways of slowing progression, the number of persons with advanced AMD is expected to double over the next 20 years, resulting in increasing socioeconomic burden," the authors write. "Oral supplementation with the Age-Related Eye Disease Study (AREDS) formulation (antioxidant vitamins C, E, and beta carotene and zinc) has been shown to reduce the risk of progression to advanced AMD. Observational data suggest that increased dietary intake of lutein and zeaxanthin, omega-3 long-chain polyunsaturated fatty acids (docosahexaenoic acid [DHA] and eicosapentaenoic acid [EPA]), or both might further reduce this risk."

Emily Y. Chew, M.D., of the National Eye Institute, National Institutes of Health, Bethesda, Md., and colleagues with the Age-Related Eye Disease Study 2 (AREDS2) Research Group examined whether adding lutein + zeaxanthin, DHA + EPA, or both to the AREDS formulation might further reduce the risk of progression to advanced AMD. A secondary goal was
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Contact: Jean Horrigan
jh@nei.nih.gov
301-496-5248
The JAMA Network Journals
Source:Eurekalert

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