The best and worst U.S. states for allergies

Allergies are your body’s immune system reacting to a foreign substance, such as pet dander, pollen or shellfish, with clinical symptoms, such as coughing or swelling. Over a quarter of U.S. children (27.2%) and nearly one-third of adults (31.8%) report having some kind of allergy, according to the National Center for Health Statistics. This equates ... Read more