Vitamin D requirements in infancy: a systematic review

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Purpose of review

New evidence for recommendations for vitamin D supplementation in healthy infants based upon recent literature.

Recent findings

Randomized controlled trials published since 2009 that related to vitamin D doses in infancy were reviewed. They do not provide any additional evidence that larger, more generous amounts of daily vitamin D beyond the customary recommended 400 IU daily dose, affect any significant outcome. Larger amounts may lead to serum 25 hydroxy vitamin D concentrations that have been reported to be potentially associated with adverse effects.


There are still many unanswered questions left, in particular whether or not more ‘generous’ amounts of vitamin D in infancy may improve long-term health outcomes such as prevention of osteoporosis, allergies, or cancer.

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