New Study Shows No Vitamin D Link to Macular Degeneration

Low levels of vitamin D may not be lead to age-related macular degeneration (AMD), despite links in prior studies, researchers found.

Vitamin D deficiency predating macular degeneration didn’t predict onset of either “wet” neovascular or “dry” non-neovascular forms in an analysis of Medicare beneficiaries, reported by Frank A. Sloan, PhD, an economist at Duke University in Durham, N.C., and colleagues.

This held true across racial groups and through multivariate adjustment, the group reported in a research letter in the August issue of the Archives of Ophthalmology.

The findings contradict those of a cross-sectional analysis of the National Health and Nutrition Examination Survey III (NHANES III) reported in 2007 that indicated a significant 36% difference in early AMD risk between people with the highest and lowest vitamin D levels.

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