The Most Common Allergies in the U.S.A.

Written by Amy Sandhu and Medically Reviewed by Scott Pearlman, M.D.

Talk to almost anyone about their allergies and you're sure to get an earful. That's because they're quite common. It is estimated that over 50 million Americans suffer from an allergy. On the following pages you'll find our list of the most common allergy triggers -- from pollen to aspirin -- and estimates of how many of us they affect.