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The Importance of Vitamin D

38: The percentage of babies and toddlers who don't get enough vitamin D

Your child needs this vitamin to help her body absorb calcium and build healthy bones. Plus, there's mounting evidence that vitamin D reduces the risk of Type 1 diabetes, multiple sclerosis, and certain cancers. Kids need at least 200 international units a day  -- about two eight-ounce glasses of milk. Formula is fortified, but breastfed babies should get liquid supplements starting at 2 months, says Catherine Gordon, M.D., lead researcher of a new study on vitamin D at Children's Hospital Boston.

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