Understanding Heartburn and Acid Reflux

Heartburn is the burning sensation in the chest caused by stomach acid backing up into the esophagus, while acid reflux refers to the actual movement of acid from the stomach into the throat or chest. These two are often used interchangeably, but heartburn is the most recognizable symptom of acid reflux. The condition occurs when the lower esophageal sphincter—a ring of muscle between the stomach and esophagus—weakens or relaxes abnormally, allowing acid to escape.

Common triggers include eating large meals, consuming spicy or fatty foods, drinking alcohol or caffeine, and lying down soon after eating. Obesity, pregnancy, and certain medications can also contribute. Symptoms beyond heartburn may include a sour taste in the mouth, regurgitation of food or acid, a chronic cough, or a sore throat. In severe cases, frequent acid reflux can lead to complications like esophagitis or Barrett’s esophagus, which increase the risk of stomach cancer.

While occasional acid reflux is normal, persistent symptoms may indicate gastroesophageal reflux disease (GERD), a chronic condition requiring lifestyle changes or medical treatment. Managing triggers, maintaining a healthy weight, and avoiding late-night meals can reduce episodes. If symptoms worsen or interfere with daily life, consulting a healthcare provider is important to rule out underlying issues.