Heartburn: Causes, When to Worry, and Treatment Options

Heartburn feels like burning behind your breastbone, often after eating or when lying down. It happens when stomach acid flows back into the esophagus. While common and usually harmless, frequent episodes may need medical attention. Simple lifestyle changes and over-the-counter medications often help.

In plain words

Heartburn is a burning feeling in your chest, often after eating or when lying down. It happens when stomach acid flows back into the tube that carries food to your stomach. Many people get heartburn sometimes, but if it happens often, you should see a doctor. Simple changes like eating smaller meals or avoiding certain foods can help. You can also take medicines that reduce stomach acid.

What is Heartburn: Causes, When to Worry, and Treatment Options?

Symptoms

Early symptoms

Burning chest pain: A warm or burning sensation rising from the upper abdomen or lower chest toward the throat, often within 30 minutes after eating. The discomfort may last from minutes to hours. (2) (4)
Acidic taste in mouth: Sour or bitter taste from stomach acid coming up into the back of the throat, sometimes with a sensation of food or liquid returning. (2) (4)
Worse when lying down or bending: Symptoms often increase when reclining, bending over, or straining due to gravity allowing stomach acid to flow back more easily. (2) (4)
Discomfort after large meals: Episodes frequently follow eating big portions, fatty foods, late-night snacks, or known trigger foods like citrus or spices. (2)

Serious or emergency symptoms

Pain with shortness of breath or sweating: Chest discomfort accompanied by difficulty breathing, cold sweat, or lightheadedness may indicate a heart attack rather than simple heartburn. Call emergency services immediately. (6) (4)
Persistent pain despite medication: Heartburn that doesn't improve with antacids or other treatments, or comes back soon after medication wears off. Schedule prompt medical evaluation. (6)
Difficulty swallowing: Feeling like food sticks in your throat or chest, which could indicate esophageal damage from chronic acid reflux. See your doctor within a few days. (6) (4)
Unintentional weight loss: Losing weight without trying while having frequent heartburn could signal complications needing medical attention. Schedule a doctor's appointment. (6)

Causes

Primary causes

Weakened lower esophageal sphincter: A muscle valve that normally keeps stomach acid from flowing backward relaxes too often or doesn't close properly. (1) (3)
Dietary triggers: Common offenders include fatty/greasy foods, chocolate, caffeine, alcohol, citrus, tomatoes, spicy foods, garlic, onions, and peppermint. (3) (2)
Hiatal hernia: When part of the stomach bulges into the chest through the diaphragm, increasing chances of acid reflux. (1)

Risk factors

Obesity

Excess weight increases abdominal pressure that can force stomach contents upward. (4)

Pregnancy

Hormone changes and growing uterus pressure often cause or worsen heartburn during pregnancy. (4)

Smoking

Tobacco use weakens the esophageal valve and reduces saliva that neutralizes acid. (4)

Diagnosis

Doctors often diagnose occasional heartburn based on symptoms alone. For frequent or severe cases, they may recommend tests like an upper endoscopy to examine the esophagus, pH monitoring to measure acid levels, or esophageal manometry to assess muscle function. Tracking your symptoms, triggers, and responses to treatments helps your provider determine the best approach.

Physical exam and symptom review

To evaluate your symptoms, their frequency, and possible contributing factors like hiatal hernia. (5) (8)

Upper endoscopy (EGD)

A flexible tube with a camera examines the esophagus for damage from stomach acid. (8)

Esophageal pH monitoring

Measures acid levels in your esophagus over 24-48 hours using a small catheter or capsule. (5)

Treatment

Medication options

Antacids

Neutralize stomach acid quickly but temporarily. Best for occasional symptoms. (3) (7)

H2 blockers

Reduce acid production for 6-12 hours. Useful before consuming foods that trigger heartburn. (3) (8)

Proton pump inhibitors (PPIs)

Powerfully block acid production, allowing damaged esophageal tissue to heal. Most effective for frequent heartburn. (7) (8)

Lifestyle and self-care

Eat smaller, earlier meals: Avoid large meals and finish eating at least 3 hours before bedtime to prevent nighttime symptoms. (2) (7)
Identify and avoid triggers: Keep a food diary to pinpoint individual triggers like caffeine, alcohol, citrus, or spicy foods that provoke your symptoms. (2)
Elevate the head of your bed: Use 6-8 inch blocks under bedposts (not just extra pillows) to use gravity to keep stomach acid down while sleeping. (7)
Lose excess weight if needed: Even modest weight loss can reduce abdominal pressure and frequency of heartburn episodes. (7) (2)

Always discuss dosing and treatment changes with your own prescriber.

Possible complications

Esophagitis: Chronic acid exposure can inflame and damage the esophageal lining, causing painful swallowing and ulcers. (5)
Esophageal stricture: Scar tissue from repeated acid damage may narrow the esophagus, making swallowing difficult. (5)
Barrett's esophagus: Persistent acid reflux can change the esophageal lining to resemble intestinal tissue, increasing (though still small) cancer risk. (5)

When to see a doctor

Routine follow-up

If you have heartburn more than twice weekly despite lifestyle changes or over-the-counter medications. (2)
When symptoms interfere with sleep, daily activities, or require frequent use of antacids (more than twice weekly for 2+ weeks). (6)

Seek emergency care

Call emergency services if you experience chest pain with shortness of breath, arm/jaw pain, cold sweat, or nausea – these could indicate a heart attack. (6) (4)
Seek immediate care for vomiting blood, material resembling coffee grounds, or black/tarry stools, which can indicate gastrointestinal bleeding. (6)

Frequently asked questions

What causes heartburn?

Heartburn occurs when stomach acid backs into the esophagus due to a weakened lower esophageal valve. Common triggers include certain foods, large meals, lying down after eating, and being overweight. Conditions like hiatal hernia can also contribute. (1) (3)

When should I worry about heartburn?

Seek medical attention if heartburn occurs frequently (twice weekly or more), persists despite treatment, or is accompanied by red flags like difficulty swallowing, vomiting blood, or unintended weight loss. Emergency symptoms resembling possible heart attack need immediate care. (6) (4)

Is heartburn serious?

Occasional heartburn is common and typically harmless when properly managed. However, frequent untreated acid reflux can damage the esophagus and lead to complications like esophagitis, strictures, or precancerous changes (Barrett's esophagus). (5)

How do I get rid of heartburn?

For occasional symptoms: try antacids, avoid late meals, and identify food triggers. For persistent symptoms: H2 blockers or PPIs may help, along with weight management and raising the head of your bed. Always discuss long-term medication use with your doctor. (3) (7)

When should I see a doctor about heartburn?

Schedule an appointment if symptoms occur frequently despite lifestyle changes, if over-the-counter medications don't help, or if you experience persistent hoarseness, chronic cough, or trouble swallowing. Emergency care is needed for heart-attack-like symptoms or possible bleeding. (2) (6)

References

CDC — GERD (Gastroesophageal Reflux Disease) source 1
NHS — Heartburn and acid reflux source 2
MedlinePlus — Heartburn source 3
Mayo Clinic — Heartburn source 4
Cleveland Clinic — Heartburn source 5
NHS — When to get medical help source 6
Mayo Clinic — Heartburn Treatment source 7
AGA — GERD Guide source 8