Study: early exposure to allergic foods reduces allergy
For a long time, pediatricians believed that giving allergenic foods to children would make them prone to allergies. But in recent years, researchers have been trying to prove that this is wrong.
For many years, the prevailing advice for preventing food allergy in infants at high risk (ie, those with first-degree relatives with allergic conditions such as atopic dermatitis, food allergy, asthma, or allergic rhinitis) was to delay introduction of potentially allergenic foods (eg, delay peanut exposure until 3 years of age).However, this advice was based mainly on expert opinion and not evidence-based recommendations. Despite the paucity of evidence for a delay in allergenic food exposure, health care practitioners are still likely to recommend delaying specific foods. A 2012 study using a 9-item questionnaire in British Columbia found that 20 out of 93 surveyed general pediatricians were likely to recommend delaying cow’s milk and even more likely to recommend delaying peanuts and eggs beyond 4 to 6 months of age.
They argue that early exposure to allergenic items such as peanuts, eggs, wheat and cow’s milk can actually prevent food allergies. The study was especially conducted on peanuts. 600 children, from 6 to 11 months, who were at high risk of peanut allergy, were chosen for this study. They were divided into groups which were either given or avoided peanut products until the age of 5. At the end of this time, the researchers found that early exposure during the first five years of life leads to 81 percent reduction in peanut allergies. Yet the authors of the study suggest that parents beware of the dose of the different foods they’re introducing to their children.
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