Vitamin D supplements are dangerous and toxic
9.0Strong
evidence
evidence
The Claim
Some people fear that taking Vitamin D supplements can lead to toxicity and serious health issues, leading them to avoid supplementation altogether.
Origin
This concern is often rooted in warnings about hypervitaminosis D, which can occur with excessive doses, and media reports highlighting rare cases of toxicity.
What Science Says
Research indicates that Vitamin D toxicity is extremely rare and typically only occurs with very high doses over extended periods. A review of cases found that toxicity usually arises from supplementation exceeding 10,000 IU/day, far above the recommended amounts for most individuals. Most studies suggest safe upper limits are well above typical supplementation levels.
Verdict
Mostly False