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[Digestive](/glossary?system=Digestive)[Gut Health](/topics/gut-health)

# Gastroesophageal Reflux Disease

gas·tro·e·soph·a·ge·al re·flux - GAS-tro-ee-SOF-uh-JEE-ul REE-fluks

## Definition

[Gastroesophageal reflux disease](/conditions/gerd) (GERD) is a chronic digestive condition in which stomach acid frequently flows back up into the esophagus - the tube connecting your mouth to your stomach. This backward flow, called acid reflux, irritates the lining of the esophagus and causes the burning chest sensation commonly known as heartburn.

At the junction where the esophagus meets the stomach, there's a ring of muscle called the lower esophageal sphincter (LES) that acts as a one-way valve - it opens to let food into the stomach and closes to prevent stomach contents from flowing back up. In GERD, the LES is either weakened or relaxes inappropriately, allowing acidic stomach contents to escape into the esophagus.

Occasional acid reflux is normal - most people experience it from time to time, especially after large or spicy meals. GERD is diagnosed when reflux symptoms occur more than twice a week, are severe enough to interfere with daily life, or cause damage to the esophageal lining. Untreated GERD can lead to complications including esophagitis ([inflammation](/glossary/inflammation) of the esophagus), strictures (narrowing), Barrett's esophagus (precancerous changes), and rarely, esophageal cancer.

## Also Known As

GERD Acid reflux disease Chronic heartburn 

## Key Facts

-   • An estimated 20% of the U.S. population experiences GERD symptoms weekly. 
-   • Common triggers include spicy foods, citrus, caffeine, alcohol, chocolate, fatty meals, and eating close to bedtime. 
-   • Proton pump inhibitors (PPIs) like omeprazole are the most effective medications for GERD but are intended for short-term use. 
-   • Elevating the head of the bed by 6-8 inches can significantly reduce nighttime reflux symptoms. 
-   • Obesity is a major risk factor - excess abdominal weight increases pressure on the stomach and LES. 
-   • Barrett's esophagus, a potential complication of chronic GERD, affects about 10-15% of GERD patients. 

## How It Relates To Your Health

If you experience frequent heartburn, regurgitation of food or sour liquid, difficulty swallowing, or a chronic cough, [GERD](/conditions/gerd) may be the underlying cause. While over-the-counter antacids provide temporary relief, chronic symptoms warrant medical evaluation to assess for esophageal damage and develop an appropriate treatment plan.

Lifestyle modifications are the foundation of GERD management: losing excess weight, avoiding trigger foods, not eating within 3 hours of bedtime, elevating the head of the bed, and not lying down after meals. When lifestyle changes aren't sufficient, medications and occasionally surgical procedures can provide effective long-term control.

## Related Terms

[Microbiome](/glossary/microbiome)[Peristalsis](/glossary/peristalsis)[Inflammation](/glossary/inflammation)

## Related Conditions

[

### GERD

Digestive 

GERD occurs when stomach acid frequently flows back into the esophagus, irritating its lining and causing persistent heartburn. If left untreated, chronic acid exposure can lead to esophagitis, Barrett's esophagus, and an increased risk of esophageal cancer.

Burning chest pain (heartburn) Acid regurgitation Difficulty swallowing 

Chronic Learn More 

](/conditions/gerd)

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### Sleep Hygiene: 12 Evidence-Based Tips

2025-09-15

## Sources

1.  [Gastroesophageal Reflux Disease (GERD)](https://www.niddk.nih.gov/health-information/digestive-diseases/acid-reflux-ger-gerd-adults) - National Institute of Diabetes and Digestive and Kidney Diseases (NIH)
2.  [Gastroesophageal reflux disease (GERD)](https://www.mayoclinic.org/diseases-conditions/gerd/symptoms-causes/syc-20361940) - Mayo Clinic
3.  [GERD](https://gi.org/topics/gastroesophageal-reflux-disease-gerd/) - American College of Gastroenterology

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In This Entry

[Definition](#definition)[Also Known As](#also-known-as)[Key Facts](#key-facts)[How It Relates To Your Health](#health-relevance)[Related Terms](#related-terms)[Related Conditions](#related-conditions)[Related Articles](#related-articles)[Sources](#sources)

Browse Digestive Terms

[Irritable Bowel Syndrome](/glossary/irritable-bowel-syndrome)[Microbiome](/glossary/microbiome)[Peristalsis](/glossary/peristalsis)[Leaky Gut Syndrome](/glossary/leaky-gut-syndrome)[Detoxification](/glossary/detoxification)[Dysbiosis](/glossary/dysbiosis)

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