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Study adds evidence regarding protective effect of vitamin D against dementia.

A report published in the journal Neurology provides more evidence supporting a link between optimum serum vitamin D levels and a lower risk of dementia, including Alzheimer's disease.*

The analysis included 1,658 participants in the Cardiovascular Health Study, who did not have dementia, cardiovascular disease, or stroke upon enrollment. After almost six years, 171 subjects were diagnosed with dementia, which included 102 cases of Alzheimer's disease.

The researchers found a 53% greater risk of dementia and a 69% higher risk of Alzheimer's disease among subjects with moderate vitamin D deficiency, and more than double the risk of dementia or Alzheimer's disease among those with severe deficiency compared to participants with sufficient amount of vitamin D.

"Clinical trials are now needed to establish whether eating foods such as oily fish or taking vitamin D supplements can delay or even prevent the onset of Alzheimer's disease and dementia," lead researcher David J. Llewellyn stated.

Editor's Note: Dr. Llewellyn added, "The findings are very encouraging, and even if a small number of people could benefit, this would have enormous public health implications given the devastating and costly nature of dementia."

* Neurol. 2014 Aug 6.

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Title Annotation:IN THE NEWS
Publication:Life Extension
Article Type:Brief article
Date:Dec 1, 2014
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