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(Nature World News) – People with low levels of vitamin D in their blood are twice as likely to die earlier than those with high levels of the sunshine vitamin.

The study – conducted by researchers at the University of California, San Diego School of Medicine – is based on data from 32 previous studies on the subject. Researchers looked at 25-hydroxyvitamin D, which is the primary form of vitamin D found in blood. A total of 566,583 people participated in the studies.

Low levels of vitamin D are often found to be associated with poor muscle function in adults and children. Related research had shown that high levels of vitamin D and calcium in diet extend life and that a deficiency of vitamin D in diet might lead to depression. The present study found a link between vitamin D deficiency and early death risk.

“Three years ago, the Institute of Medicine (IOM) concluded that having a too-low blood level of vitamin D was hazardous,” said Cedric Garland, lead author of the study.

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