The U.S. Centers for Disease Control (CDC) estimates that 50 million Americans experience tinnitus. That’s over 15 percent of the U.S. population, or nearly one in every six of us. So what is this condition that affects so many people — and what can tinnitus sufferers do about it? We cover the basics here. 1. What is tinnitus? Tinnitus is the medical term for the sensation of hearing sound in your ears when ...