When people think of heartburn, they usually blame a heavy meal, spicy food, or late-night snacking. But when chronic or stubborn heartburn doesn’t go away—even after cleaning up your diet—there is often an underlying anatomical or physiological issue at play.
One of the most common “hidden” culprits behind persistent heartburn is a hiatal hernia.
## What is a Hiatal Hernia?
Normally, your esophagus passes down through your chest and connects to your stomach through a small opening in your diaphragm (the muscle wall separating your chest from your abdomen).
A hiatal hernia occurs when the upper part of your stomach pushes upward through that opening and into your chest cavity.
## Why Does It Cause Heartburn?
Your diaphragm naturally acts as an extra layer of pressure to help keep the lower esophageal sphincter (the valve between your stomach and esophagus) tightly closed. When a hiatal hernia pulls part of the stomach above the diaphragm, that natural support mechanism is compromised. This weakens the valve, making it much easier for stomach acid and digestive enzymes to splash upward into the esophagus, triggering persistent heartburn and acid reflux.
## Other Less Obvious Culprits
Aside from a hiatal hernia, frequent heartburn can sometimes be tied to:
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Certain Medications: Common drugs—including certain blood pressure medications (calcium channel blockers), anti-inflammatories like ibuprofen, sedatives, and even some osteoporosis treatments—can relax the esophageal valve or irritate the lining of the esophagus.
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Esophageal Motility Issues: Sometimes the problem isn’t just acid, but how poorly your esophagus works to clear that acid back down into the stomach.
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Hormonal Shifts or Increased Abdominal Pressure: Pregnancy, significant weight gain, or even chronic coughing and stress can increase pressure on the stomach and push contents upward.
When to See a Doctor: If you find yourself relying on over-the-counter antacids more than twice a week, or if lifestyle changes aren’t giving you relief, it’s worth speaking with a doctor or a gastroenterologist. They can perform evaluations (like an endoscopy or imaging) to check for a hiatal hernia or GERD and ensure you get an accurate treatment plan.
Are you or someone you know dealing with frequent heartburn that seems resistant to the usual fixes?
