Vitamin D: How Much is Too Much?


Is it Possible to Get Too Much Vitamin D?

Not only is vitamin D vital for bone and brain health, but the nutrient has also been touted as a potential treatment for everything from headaches to the flu. But is it possible to get too much vitamin D?

Yes, it is possible to have too much of a good thing, especially when it comes to too much vitamin D, according to a new study. The paper, published in JAMA, says more than 18% of the U.S. population gets excess vitamin D — and more than 3% takes daily doses so high it could actually be harmful to their health.

Vitamin D has been touted as being so crucial to good health, that some health practitioners regularly screen patients for a vitamin D deficiency. A 2007 paper in the New England Journal of Medicine even linked a lack of the nutrient to an increased risk of cancer, diabetes, schizophrenia and depression. So naturally, it makes sense that people would want to take in all the goodness that vitamin D supplements have to offer. But how much is safe to take?

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