Pregnancy diet may impact child\'s allergy risk

Posted on: Wed, 02/28/2007 - 12:32pm
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Wed Feb 28, 2:49 PM ET

What a woman eats during pregnancy may influence the odds that her child will develop allergies, a new study hints.

Dr. Joachim Heinrich, of GSF-Institute of Epidemiology, Neuherberg, Germany, and colleagues studied associations between maternal diet during the last 4 weeks of pregnancy and allergies and eczema in offspring at age 2 years.

They analyzed data from 2,641 children. Overall, 17.7 percent of all children had doctor-diagnosed eczema at age 2. A total of 9.3 percent were sensitized to food allergens, most commonly milk and eggs, and 4.8 percent were sensitized to inhaled allergens.

After adjusting for potentially confounding factors, positive associations were observed between high maternal intakes of margarine and vegetable oils during the last 4 weeks of pregnancy and eczema during the first 2 years in the offspring.

On the other hand, eating a lot of fish late in pregnancy seemed to offer some protection against eczema in offspring.

The study also found that children born to moms who ate a lot of celery and citrus fruit were at increased risk for sensitization to food allergens. Sensitization to inhaled allergens was also associated with high maternal intakes of deep-frying vegetable fat, raw sweet pepper and citrus fruit.

Despite these apparent associations, the researchers say "before any recommendations can be made, randomized clinical intervention trials should be performed to confirm the cause-effect relation observed in the present study."

SOURCE: American Journal of Clinical Nutrition, February 2007.

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