The Nutrition Examination Research Digest (NERD) aims to provide rigorous, unbiased analysis of the latest and most important nutrition and supplementation studies. Click here to subscribe or login if already a subscriber .

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NERD Mini: Do longer term, large doses of vitamin D have any adverse effects?

As more people take vitamin D, doses can creep up, whether from daily supplementation or large, periodic bolus doses. This meta-analysis examined whether larger doses of vitamin D over longer periods of time have any adverse effects.

Study under review: Adverse events from large dose vitamin D supplementation taken for one year or longer.

What was studied?

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What were the major findings?

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What’s the take-home?

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Other Articles in Issue #51 (January 2019)