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Children who drink rice, almond, soy or goat’s milk have lower levels of vitamin D in their blood than those who drink cow’s milk, according to a new study. Canadian regulations stipulate that every 100 millilitres of cow’s milk must be fortified with 40 International Units of vitamin D, non-cow’s milk is not subject to this regulation.

The study tracked 3,821 healthy children ages one to six, of which 13 per cent drank only non-cow’s milk. These kids were twice as likely to be vitamin D deficient compared to those who drank predominantly cow’s milk.

The authors encourage parents and caregivers to read labels carefully when looking for alternative sources of vitamin D for children who don’t drink cow’s milk.

Original research paper published in the Canadian Medical Association Journal on October 20, 2014.

Names and affiliations of selected authors

Jonathon Maguire, St. Michael’s Hospital, Ontario