Heart Burn Access

Heartburn is a painful, burning sensation in the chest or throat, typically caused by stomach acid backing up into the esophagus. This "deep" dive into the condition covers its physiological mechanisms, variations, and critical distinctions from more serious health issues. Physiological Mechanisms

: Normally, the lower esophageal sphincter (LES) acts as a seal. If this muscle becomes loose or relaxes inappropriately, acid can leak through. HEART BURN

The primary cause is gastroesophageal reflux (GER), where stomach contents regurgitate into the esophagus. Heartburn is a painful, burning sensation in the

: Unlike the stomach, the esophagus lacks a protective lining against acid and pepsin. Chronic exposure damages the mucosa and submucosa, triggering pain through deep-seated sensory nerves. Heartburn is a painful