Vitamin D deficiency could be a result of poor health, not a cause

It may be that low vitamin D levels are a consequence of poor health rather than being a cause of it, suggests a research team from New Zealand.

Evidence from 40 clinical trials has been examined by Dr Mark Bolland and his colleagues to establish if vitamin D supplements have a significant impact on reducing bone fracture, heart attack and other issues.

Publishing their results in The Lancet Diabetes & Endocrinology, the team found no association between the use of vitamin D supplements and significant health improvements in these areas.