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New Study on Milk Allergy in Children Younger Than 1

Although parents often focus on peanuts as the food allergy they need to worry about most, cow's milk is the most common food allergy in children younger than age 5. New research recently presented at the American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific Meeting found that more than 2% of all US children younger than age 5 have a cow's milk allergy and 53% of food-allergic infants younger than age 1 have a cow's milk allergy.

"Children in the United States spend their early years drinking milk, so it's important to know that many of them—at least in the first few years—may be allergic," says Christopher Warren, PhD(c), lead study author. "Our findings suggest that while milk allergy is relatively common during infancy, many children are likely to outgrow their milk allergies. We observed that while an estimated 53% of food-allergic infants under age 1 have a milk allergy, the number drops to 41% of 1 to 2-year-olds, 34% of 3 to 5-year-olds, and 15% of 11 to 17-year-olds."

The study surveyed more than 53,000 parents in households with children across the United States. The survey was done over a one-year period from October 2015 to September 2016.

"We know confusion exists over what a real milk allergy looks like," says Ruchi Gupta, MD, ACAAI member and study author. "A child may have a milk intolerance that his parents mistake for a milk allergy. It's important that any child suspected of having a milk allergy have the allergy confirmed with an allergist. A food allergy of any kind can have a big effect on a household, including food costs and quality of life. A child with a milk allergy should receive counseling on how to avoid milk, but also on what it means to unnecessarily cut out foods. You don't want to get rid of necessary nutrients."

According to the study, only 26% of milk-allergic children in the United States have a current epinephrine auto-injector prescription—the lowest reported rate among the top nine food allergies. "Parents need to make sure they have an epinephrine auto-injector available and should talk to their child's allergist if they have any questions," Gupta says.

— Source: American College of Allergy, Asthma and Immunology
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