Dust, cats, peanuts, cockroaches all contribute to allergies. Up to 50 million Americans, including millions of kids, have some type of allergy. In fact, allergies account for the loss of an estimated 2 million schooldays per year.
The majority of children who have milk, egg, and wheat allergies outgrow them by the time they’re five. And surprisingly, about 20 percent of kids with peanut allergies, once thought to be lifelong, outgrow that too. Shellfish allergies, however, usually last a lifetime.