A new review recently found how vitamin D supplements actually do not have any effects in preventing cancer, bone fractures, heart attacks and stroke

Previous research had seen a strong link between vitamin D deficiency and poor health in these areas.
But the new study, published in The Lancet Diabetes & Endocrinology, strengthens arguments that vitamin D deficiency is usually the result of ill health -- not the cause of it.
Its authors say there is "little justification" for doctors to prescribe vitamin D supplements as a preventive measure for these disorders.
"Available evidence does not lend support to vitamin D supplementation and it is very unlikely that the results of a future single randomised clinical trial will materially alter the results from current meta-analyses," they write.
Vitamin D is a key component for healthy bones, teeth and muscles.
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In March last year, British scientists, in a comparison of 4,000 women, found that vitamin D supplements taken in pregnancy made no difference to the child's bone health.
In contrast, a November 2012 investigation into pregnant women who lived in high-latitude, northern hemisphere countries with long, dark winters found a link between low levels of natural vitamin D and an increased risk of multiple sclerosis (MS) in their offspring.
For these women, taking vitamin D supplements to offset the effects of long periods without sunlight could be advisable, according to that research.
Source-AFP