Atrial fibrillation, or A-fib, is becoming more common, but doctors say treatments are improving. The condition is a quivering or irregular heartbeat.

At least 2.7 million people are living with atrial fibrillation in the U.S., according to the American Heart Association.That includes NFL defensive end J.J. Watt who underwent treatment last week for ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Atrial fibrillation, also known as AFib, is an irregular heartbeat, or arrhythmia that happens when the ...

in *** tweet over the weekend, Arizona cardinals, defensive end J. J. Watt revealed he'd been treated for atrial fibrillation or *** fib. If you have atrial fibrillation, take it serious. Dr ...