Study casts doubt on whether extra vitamin D prevents disease

Researchers cast doubt on the prevailing wisdom that vitamin D supplements can prevent conditions like cancer, diabetes and heart disease, saying on Friday low vitamin D may be a consequence, not a cause, of ill health.

http://www.reuters.com/article/2013/12/06/us-vitamin-d-idUSBRE9B500120131206?feedType=RSS&feedName=healthNews