November 28, 2009

Low Vitamin D Levels Puts Elderly at Risk

A new study by researchers at the University of Colorado Denver and Massachusetts General Hospital (MGH) shows vitamin D plays a vital role in reducing the risk of death associated with older age. The research, just published in the Journal of the American Geriatrics Society, evaluated the association between vitamin D levels in the blood and the death rates of those 65 and older. The study found that older adults with insufficient levels of vitamin D die from heart disease at greater rates that those with adequate levels of the vitamin.

“It’s likely that more than one-third of older adults now have vitamin D levels associated with higher risks of death and few have levels associated with optimum survival,” said Adit Ginde, MD, MPH, an assistant professor at the University of Colorado Denver School of Medicine’s Division of Emergency Medicine and lead author on the study. “Given the aging population and the simplicity of increasing a person’s level of vitamin D, a small improvement in death rates could have a substantial impact on public health.”

Confirmation of these results in large randomized trials is critically important for advancing public health. Vitamin D has health effects that go beyond strong bones. It’s very likely that it makes a vital contribution to good health. Older adults are at high risk for vitamin D deficiency because their skin has less exposure to the sun due to more limited outdoor activities as well as reduced ability to make vitamin D.

Dr. Ginde says the findings suggest that current daily recommendations of vitamin D may not be enough for older adults to maintain optimal health. The research team has applied for research funding from the National Institutes of Health to perform a large, population-based clinical trial of vitamin D supplementation in older adults to see if it can improve survival and reduce the incidence of heart disease.

The study looking at elderly death rates is the second of two studies by the same team of researchers on vitamin D and general health. The first study, published in Archives of Internal Medicine earlier this year, identified vitamin D as playing a significant role in boosting the immune system and warding off colds and flu.

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