Low Vitamin D Levels may Raise the Risk of Premature Death

Individuals having lower levels of vitamin D were are twice as more likely to die premature than those with higher levels of the vitamin, a new study has found

Individuals having lower levels of vitamin D were are twice as more likely to die premature than those with higher levels of the vitamin, a new study has found.

The finding was based on a systematic review of 32 previous studies that included analyses of vitamin D, blood levels and human mortality rates.

Sunlight: An Important Source of Vitamin D
Vitamin D is an essential vitamin necessary for the development of bones. Sunlight helps the body to produce vitamin D. Vitamin D deficiency results in rickets in children and osteomalacia in adults.

The specific variant of vitamin D assessed was 25-hydroxyvitamin D, the primary form found in blood.

"Three years ago, the Institute of Medicine (IOM) concluded that having a too-low blood level of vitamin D was hazardous," Cedric Garland, DrPH, professor in the Department of Family and Preventive Medicine at University of California, San Diego and lead author of the study said.

"This study supports that conclusion, but goes one step further. The 20 nanograms per milliliter (ng/ml) blood level cutoff assumed from the IOM report was based solely on the association of low vitamin D with risk of bone disease. This new finding is based on the association of low vitamin D with risk of premature death from all causes, not just bone diseases," Garland said.

Calcium and Vitamin Supplements
Calcium and vitamin supplements are taken to provide the body with the ''required'' nutrients. Calcium is a mineral found in many foods. Vitamins are very important nutrients for the body.

Garland said that the blood level amount of vitamin D associated with about half of the death rate was 30 ng/ml. He noted that two-thirds of the US population has an estimated blood vitamin D level below 30 ng/ml.

"This study should give the medical community and public substantial reassurance that vitamin D is safe when used in appropriate doses up to 4,000 International Units (IU) per day," Heather Hofflich, DO, professor in the UC San Diego School of Medicine's Department of Medicine said.

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"However, it's always wise to consult your physician when changing your intake of vitamin D and to have your blood level of 25-hydroxyvitamin D checked annually. Daily intakes above 4,000 IU per day may be appropriate for some patients under medical supervision," she added.

The findings are published in the American Journal of Public Health.

Source-ANI