acid reflux

The cells there aren’t built to withstand exposure to stomach acid, so in people with chronic acid reflux, they sometimes adapt by becoming more like intestinal tissue.

That includes the vast majority of people with acid reflux.

Acid reflux is when stomach acid flows into the esophagus, usually after a meal or when lying down.

People with acid reflux may experience heartburn and ulcers.

People with frequent acid reflux may develop gastroesophageal reflux disease, or GERD, which can lead to cancer of the esophagus.