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November 6, 2007

Fear and Allergies in the Lunchroom

Claudia Kalb:

About 11 million Americans suffer from food allergies, and their numbers are climbing. Allergists also say they’re seeing more children with multiple allergies. Why do allergies appear to be on the rise? One of the most intriguing theories, dubbed the “hygiene hypothesis,” is that we’ve all become too clean. The immune system is designed to battle dangerous foreign invaders like parasites and viruses and infections. But clean water, antibiotics and vaccines have eliminated some of our most toxic challenges. Research even posits that kids born by Caesarean section, which have risen 40 percent in the last decade, could be at higher risk for allergies, perhaps because they were never exposed to healthy bacteria in their mothers’ birth canals.

Posted by Jim Zellmer at November 6, 2007 4:00 AM
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