
A hiatal hernia can weaken the lower esophageal sphincter (LES), which is the muscular valve that normally prevents stomach acid from flowing backward into the esophagus.
When part of the stomach is displaced into the chest, it can interfere with the LES's ability to close properly, making acid reflux more likely.
However, it's important to know that not everyone with a hiatal hernia develops GERD, and not everyone with GERD has a hiatal hernia. Many people have small hiatal hernias without any symptoms at all. But when the two conditions do occur together, the hiatal hernia can make GERD symptoms worse and harder to manage.

Burning in the chest or throat, especially after eating or lying down
Stomach acid or food backing up into the esophagus or mouth
Discomfort that can mimic cardiac symptoms, especially when bending over
Food feeling stuck, or a sensation of something lodged in the throat
Relying on antacids or PPIs daily just to manage symptoms





