What Causes Heartburn?
After food passes through your esophagus into your stomach, a muscular valve called the lower esophageal sphincter (LES) closes, preventing food or acid to move back up.
Acid reflux occurs when the LES relaxes inappropriately, allowing acid from your stomach to flow (reflux) backward into your esophagus. But it’s important to understand that acid reflux is not a disease caused by excessive acid production in your stomach; rather it’s a symptom more commonly related to:
- Hiatal hernia1
- Helicobacter pylori (H. pylori) infection (H. pylori bacteria is thought to affect more than half of the world’s population, and has been identified as a Group 1 carcinogen by the World Health Organization2)
While these two conditions are unrelated, many who have a hiatal hernia also have H. pylori, which cause a chronic low-level inflammation of your stomach lining that can result in an ulcer3 and associated symptoms. If you have a hiatal hernia, physical therapy on the area may work and many chiropractors are skilled in this adjustment.
The hypothesis that H. pylori infection is responsible, or at least a major factor, for producing the symptoms of acid reflux stems from the work done by Dr. Barry Marshall, an Australian physician, during the early 1980s.