Fighting Allergy with Allergen

Babies who ate peanuts were less likely to develop an allergy to the food by the time they hit kindergarten, according to a new study.

kerry grens
| 2 min read

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WIKIMEDIA, FREESTOCK.CAInfants at high risk of peanut allergies who were exposed to the food ended up less likely to develop the allergy later in life, according to a study published in the New England Journal of Medicine yesterday (February 23). Although the general practice for more than decade has been for babies to steer clear of peanuts, the results give a swift kick to advice that was falling out of favor.

“This study really proves cause and effect,” Hugh Sampson, a pediatric allergist at the Icahn School of Medicine at Mount Sinai in New York City, told Science. “When someone asks me in my practice, I will encourage them to get peanuts in the diet in the first year of life.”

The study randomly assigned more than 500 babies to either eat at least six grams of peanut protein a week or to abstain from peanuts. All of the babies had eczema or an egg allergy, but did not initially have a reaction to peanuts. At five years of age, nearly 14 percent of the abstinent group had developed a peanut allergy, compared to roughly 2 percent of the peanut-eating kids.

“This is a major study—really ...

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  • kerry grens

    Kerry Grens

    Kerry served as The Scientist’s news director until 2021. Before joining The Scientist in 2013, she was a stringer for Reuters Health, the senior health and science reporter at WHYY in Philadelphia, and the health and science reporter at New Hampshire Public Radio. Kerry got her start in journalism as a AAAS Mass Media fellow at KUNC in Colorado. She has a master’s in biological sciences from Stanford University and a biology degree from Loyola University Chicago.

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