Also helpful, he said, is to “let kids have two dogs and a cat,” which will expose them to intestinal worms that can promote a healthy immune system.
Tue, Feb 03, 2009 - Page 16 News List
Babies know: a little dirt is good for you
Accumulating evidence strongly suggests that eating dirt helps calibrate the immune system
By Jane E. Brody / NY TIMES NEWS SERVICE , NEW YORK
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