A newborn’s immune system needs time to figure out what should be fought and what should be left alone. Conventional wisdom had it that early exposure to potential troublemakers, from peanuts to pets, could lead to allergy issues later.
But recent research shows that having a dog or cat at home isn't likely to make children allergic to animals. And a new study finds that kids who grow up with pets are less likely to have an animal allergy all the way through age 18. The works is in the journal Clinical & Experimental Allergy . [Bill Hesselmar et al., " Does early exposure to cat or dog protect against later allergy development? "]