S1 is the first heart sound that doctors can hear using a stethoscope. The vibrations that occur when the mitral and tricuspid valves in the heart close produce the S1 sound. There are two common ...

NEW YORK — Matt Garlock has trouble making out what his friends say in loud bars, but when he got a hearing test, the result was normal. Recent research may have found an explanation for problems like ...

Tinnitus may occur after exposure to loud noise, such as live music, heavy machinery, or fireworks. Share on Pinterest vm/Getty Images You’ve probably heard about the dangers of listening to loud ...