Extra vitamin D won’t reduce fractures in healthy older people, study finds

Taking 2,000 IU (international units) a day of supplemental vitamin D3 without calcium over the course of more than five years did not reduce hip, wrist or pelvic fractures when compared with taking a daily placebo, according to the study published Wednesday in The New England Journal of Medicine.

A placebo is a sham pill given to patients so they will believe they are getting the real treatment.

“This is the largest, longest, randomized controlled trial on vitamin D supplementation in the US — 25,871 men and women were enrolled from all 50 states, including 20% Black participants,” said study author Dr. Meryl LeBoff, chief of the calcium and bone section in the Endocrinology, Diabetes and Hypertension Division at Brigham and Women’s Hospital in Boston.

“Overall, the results from this large clinical trial do not support the use of vitamin D supplements to reduce fractures in generally healthy US men … Read More

Vitamin D Supplements Don’t Help Another Condition, Study Finds

The idea made so much sense it was almost unquestioningly accepted: Vitamin D pills can protect bones from fractures. After all, the body needs the vitamin for the gut to absorb calcium, which bones need to grow and stay healthy.

But now, in the first large randomized controlled study in the United States, funded by the federal government, researchers report that vitamin D pills taken with or without calcium have no effect on bone fracture rates. The results, published Thursday in The New England Journal of Medicine, hold for people with osteoporosis and even those whose blood tests deemed them vitamin D deficient.

These results followed other conclusions from the same study that found no support for a long list of purported benefits of vitamin D supplements.

So, for the millions of Americans who take vitamin D supplements and the labs that do more than 10 million vitamin D tests

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