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Vitamin D may be good for your health but no one can prove it

Evropi Theodoratou from the Centre for Population Health Sciences at the University of Edinburgh in Scotland and Oscar H. Franco, Professor of Preventive Medicine at the University Medical Center Rotterdam in Holland, both presented papers in the April 1, 2014, edition of the British Medical Journal that indicate no conclusive evidence concerning the health benefits of vitamin D can be proven. The papers can be read here and here.

Katy Huddlestun lays on the beach December 21, 2006, in Miami Beach, Florida. A study by the Harvard School of Public Health links Vitamin D to a lower risk of developing multiple sclerosis.
Photo by Joe Raedle/Getty Images

While more than 137 studies indicate that vitamin D has some health benefit only seven percent could be substantiated by clinical trials and only one could replicate any benefit from vitamin D.

Vitamin D was not shown to have any preventative effect on heart disease or cancer by comparison of the rates of death in controlled trials that lasted between three and seven years.

Vitamin D has been claimed to reduce the risk of cardiovascular disease, prevent cancer, reduce dental caries in children, prevent kidney disease, and to control birth weight. The researchers found that the claim that vitamin D may control birth weight has some basis in fact but that all the other claims of the benefits of vitamin D could not be proven.

The researchers suggest a healthy lifestyle as opposed to taking a vitamin with the expectations of miraculous results.

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