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Low vitamin D causes problems for acutely ill patients
Date:4/30/2009

A group of endocrinologists in Sydney have observed that very sick patients tend to have very low levels of Vitamin D. The sicker they are, the lower the levels.

Dr Paul Lee, Professor John Eisman and Associate Professor Jackie Center, researchers at Sydney's Garvan Institute of Medical Research, examined a cohort of 42 Intensive Care Unit (ICU) patients. Forty-five percent turned out to be Vitamin D deficient.

These findings will be published as a letter in the April 30, 2009 issue of the New England Journal of Medicine.

"Until now, the medical community has thought of Vitamin D deficiency as a chronic condition," said Dr Lee. "Little is known about its acute complications."

"Last year, we published several cases showing that Vitamin D deficiency can cause acute complications in the intensive care unit."

"Recently, Vitamin D has been recognised for its many roles beyond the musculoskeletal system. It has been implicated in diabetes, in the immune system, in cancers, in heart disease and in metabolic syndrome."

"Vitamin D appears to have roles in controlling sugar, calcium, heart function, gut integrity, immunity and defence against infection. Patients in ICU suffer from different degrees of inflammation, infection, heart dysfunction, diarrhoea and metabolic dysregulation so vitamin D deficiency may play a role in each of these common ICU conditions."

"So we did a preliminary study and found that 45% of people in our ICU were Vitamin D deficient. There may be a bias, in that all patients were referred to endocrinology, so the numbers may not reflect the prevalence in a standard ICU cohort. However 45% is still a significant proportion.

When the team correlated the Vitamin D levels with a disease severity score, there was a direct correspondence between sickness and Vitamin D deficiency. In other words, the sicker someone was, the lower the levels of Vitamin D. Out of the 42 pati
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Contact: Alison Heather
a.heather@garvan.org.au
61-292-958-128
Research Australia
Source:Eurekalert

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