Wednesday 4 September 2013

Reducing Vitamin D deficiency by supplements

By Clare Tweedy

A lack of sunlight during the winter months can lead to vitamin D deficiency, a problem that is particularly widespread amongst the elderly. The vitamin is responsible for increasing bone density, and therefore reduces the risk of fractures. It is thought that during the winter there is a 30% reduction in vitamin D made by the body, commonly caused by a lack of time spent outdoors.

Researchers at Newcastle University are investigating whether vitamin D supplementation can reduce the risks associated with this deficiency. Different doses of the vitamin will be given daily to participants over the age of 75. Currently, 400 iu (international units) of vitamin D per day is recommended in the UK. The study will also investigate the effect of higher doses and the possibility that more vitamin D than the current recommendation is required to avoid deficiency. The study, funded by Arthritis UK, will begin in the autumn and a change in participant’s bone density (and therefore their risk of fracture) is anticipated by the end of the two years.

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