Your lower esophageal sphincter (LES) is a muscular ring that connects your esophagus with your stomach. It relaxes to let food pass through but otherwise stays closed to prevent stomach acid from ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. You've just enjoyed a great meal, maybe with a few drinks. Suddenly your throat is on fire, there's a bad taste in your ...

I chalked the initial incident up to unfortunate weather conditions. It was 85 degrees, 80 percent humidity, with a UV index of six—not ideal for running at all, let alone an attempt at being ...

So you're feeling that uncomfortable burning sensation in your chest. Your mouth tastes bitter or sour. The back of your throat is burning. While the occasional heartburn episode usually isn't an ...