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U.S. should raise vitamin D RDI

Vitamin D3 is safe, has benefits beyond healthy bones and the U.S. government should raise its recommendation for the tolerable upper intake level to 250 mcg (10,000 IU) per day from 50 mcg (2,000 IU) per day, according to scientists from the Council for Responsible Nutrition.

In a new review, researchers examined data from 21 clinical trials with dosages of vitamin D ranging from 10 mcg per day to 2,500 mcg per day and found no adverse effects up to 1,250 mcg per day. Doctors noted that nearly all prior negative reports for vitamin D (toxicity) involved doses above 2,500 mcg (100,000 IU) per day.

The body makes vitamin D from sunlight, but most people living in less sunny northern climates may be deficient. There are small amounts of vitamin D in milk, fish and liver that typically account for about 2.5 mcg per day.

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