Eating peanuts while pregnant can cut risk of child allergies: study

Peanuts

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Doctors used to recommend that women steer clear of peanuts while pregnant and nursing, out of concern they might lead to allergies in children. But now a new study provides evidence of the opposite – that eating nuts during pregnancy can protect against allergies.

Women who eat peanuts while pregnant are less likely to have children with peanut allergies than women who avoid them, said a study out Monday.

The findings in the Journal of the American Medical Association (JAMA) Pediatrics were based on a study of more than 8,200 U.S. children.

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Among those, researchers found 140 cases of children who were allergic to nuts.

When they looked into the mothers’ diets during and soon after pregnancy, as reported in the Nurses Health Survey II, they found that women who ate five or more servings per week of peanuts or tree nuts, such as cashews, almonds and walnuts, were far less likely to have children who were allergic than women who avoided nuts.

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“Our study showed increased peanut consumption by pregnant mothers who weren’t nut allergic was associated with lower risk of peanut allergy in their offspring,” said senior author Michael Young of the Boston Children’s Hospital Division of Allergy and Immunology.

“Assuming she isn’t allergic to peanuts, there’s no reason for a woman to avoid peanuts during pregnancy.”

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Doctors used to recommend that women steer clear of peanuts while pregnant and nursing, out of concern they might lead to allergies in children.

The United States recently saw a tripling of peanut allergies in children, going from 0.4 percent of young people in 1997 to 1.4 percent in 2010, according to background data in the JAMA article.

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Allergies arise when the body treats nuts as a harmful invader. Symptoms can be severe and even fatal, causing hives, rashes, swelling, difficulty breathing and a swift drop in blood pressure.

But recommendations changed in 2008, when the American Academy of Pediatrics decided there was not enough evidence to continue urging women to avoid nuts in pregnancy.

Subsequent studies, like the latest one in JAMA, have shown that exposure is more likely to be helpful than harmful, though some confusion remains among the general public on the issue.

“Our study supports the hypothesis that early allergen exposure increases the likelihood of tolerance and thereby lowers the risk of childhood food allergy,” said the JAMA article.

Young noted that researchers cannot say that eating more peanuts in pregnancy will prevent peanut allergy in children.

“But we can say that peanut consumption during pregnancy doesn’t cause peanut allergy in children,” he said.


Health – NY Daily News

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