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CDC: Babies Don't Get Enough Vitamin D

Just 1% to 13% of Infants Are Given Supplements
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WebMD Health News
Reviewed by Laura J. Martin, MD

March 22, 2010 -- As few as one in five formula-fed babies and one in 20 breastfed babies are getting as much vitamin D in their diets as the nation's leading pediatricians' group now calls for, the CDC says.

In 2008, the American Academy of Pediatrics doubled its recommended daily intake of the vitamin for infants and children from 200 to 400 international units (IU) a day.

But according to the CDC estimate, only 5% to 13% of breastfed infants and 20% to 37% of formula-fed babies are getting enough vitamin D to meet the new guidelines.

CDC researchers analyzed data from a nationwide survey of infant feeding practices conducted between 2005 and 2007 to estimate how many babies were getting enough vitamin D in their diets during their first year of life.

The investigation found vitamin D supplementation to be quite low, even among exclusively breastfed babies.

Just 1% to 4% of the formula-fed babies and 5% to 13% of babies getting only breast milk were receiving vitamin D supplements.

Because breast milk contains very low levels of vitamin D, supplementation is recommended.

Babies who drink 34 ounces (1 liter) a day of formula get enough of the vitamin to meet the new recommendations. But only a third of the babies in the survey drank this much formula, says the CDC’s Cria G. Perrine, PhD, who led the study team.

“Breastfed infants definitely need a vitamin D supplement, and most formula-fed infants probably need supplementation too to get 400 IU a day,” she tells WebMD.

Sources of Vitamin D

Food sources of vitamin D include fatty fish, eggs, and milk. But even adults have a hard time getting the recommended levels of the vitamin through food alone.

The body also makes its own vitamin D when exposed to ultraviolet B (UBV) rays from the sun.

But the American Academy of Pediatrics recommends that children under the age of 6 months avoid sun exposure and wear protective clothing and sunscreen when in the sun to avoid burning.

While some have questioned these guidelines, Perrine says they are not likely to change because of concerns about the dangers of early-life sun exposure.

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