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Understanding the Causes of Acid Reflux

Know about the acid reflux, causes, symptoms, how it influences your health and tips to manage acid reflux disease. Learn about when to seek a doctor and more.

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Written by Dr. J T Hema Pratima

Reviewed by Dr. Vasanthasree Nair MBBS

Last updated on 4th Aug, 2025

Introduction 

Acid reflux is a common digestive issue that many people experience at some point in their lives. It occurs when stomach acid flows back into the esophagus (the tube connecting your mouth to your stomach), causing discomfort and sometimes pain. While occasional acid reflux is normal, frequent episodes may indicate a more serious condition called gastroesophageal reflux disease (GERD).

In this article, we’ll explore the causes of acid reflux, its symptoms, and how you can manage it effectively.

What Is Acid Reflux?

Acid reflux happens when the lower esophageal sphincter (LES), a muscle at the end of your esophagus, doesn’t close properly after food enters the stomach. This allows stomach acid to flow backward, irritating the lining of the esophagus.

Consult a top Gastroenterologist for the best advice

Dr Bhargav Vuppumalla, General Physician/ Internal Medicine Specialist

Dr Bhargav Vuppumalla

General Physician/ Internal Medicine Specialist

5 Years • MBBS MD GENERAL MEDICINE

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

550

83 Cashback

Dr Supreet Kumar, Surgical Gastroenterologist

Dr Supreet Kumar

Surgical Gastroenterologist

11 Years • MBBS ( Gold Medalist and Distinction Holder ) MS General Surgery ( Honors) DrNB Surgical Gastroenterology Fellowship Liver Transplant and HPB Surgery ( IAH ) FMAS MMAS HPB ( Masters in Minimal Access Surgery)

Delhi

Apollo Hospitals Indraprastha, Delhi

recommendation

89%

(400+ Patients)

800

120 Cashback

Dr Harish K C, Gastroenterology/gi Medicine Specialist

Dr Harish K C

Gastroenterology/gi Medicine Specialist

15 Years • MBBS MD DM MRCP(UK) (SCE-Gastroenterology and Hepatology)

Bangalore

Manipal Hospital, Bangalore

850

1000

No Booking Fees

Dr. Paramesh K N, Gastroenterology/gi Medicine Specialist

Dr. Paramesh K N

Gastroenterology/gi Medicine Specialist

16 Years • MBBS, MS ( General Surgery), DNB ( Surgical Gastroenterology)

Hyderabad

Sprint Diagnostics Centre, Hyderabad

813

750

Dr. Mohd Irtaza, Gastroenterology/gi Medicine Specialist

Dr. Mohd Irtaza

Gastroenterology/gi Medicine Specialist

11 Years • MBBS, MD Internal Medicine, DM Gastroenterology

Delhi

Apollo Hospitals Indraprastha, Delhi

recommendation

92%

(100+ Patients)

1500

150 Cashback

1500

No Booking Fees

Common Symptoms of Acid Reflux

The common symptoms include:

  1. A burning sensation in the chest (heartburn)

  2. Regurgitation of sour or bitter-tasting acid into the throat

  3. Difficulty swallowing

  4. Bloating or burping

  5. Chronic cough or sore throat

  6. Feeling like there’s a lump in your throat

If you experience these symptoms frequently (more than twice a week), you may have GERD, which requires medical attention.

What Causes Acid Reflux?

Several factors contribute to acid reflux, including lifestyle habits, diet, and certain medical conditions.

1. Weak Lower Esophageal Sphincter (LES)

The LES is supposed to act as a valve, keeping stomach acid from flowing back up. If it weakens or relaxes abnormally, acid reflux occurs.

2. Dietary Triggers

The dietary triggers include:

  • Spicy, fatty, or fried foods – These can irritate the stomach lining and relax the LES.

  • Citrus fruits and tomatoes – High acidity increases reflux risk.

  • Chocolate, caffeine, and carbonated drinks – These may weaken the LES.

  • Alcohol – Can increase stomach acid production and relax the LES.

3. Lifestyle Factors

Lifestyle factors which may influence acid reflux include:

  • Overeating or eating late at night – Large meals put pressure on the stomach, forcing acid upward.

  • Smoking – Weakens the LES and reduces saliva production, which helps neutralize acid.

  • Obesity – Excess weight increases abdominal pressure, pushing acid into the esophagus.

  • Lying down immediately after eating – Gravity helps keep acid down; lying flat makes reflux more likely.

4. Pregnancy

Hormonal changes and pressure from the growing baby can push stomach acid upward.

5. Hiatal Hernia

A condition where part of the stomach pushes up into the diaphragm, weakening the LES and causing reflux.

6. Certain Medications

Some pain relievers (like ibuprofen), blood pressure medications, and muscle relaxers can trigger acid reflux.

How Acid Reflux Affects Your Health

Occasional acid reflux is usually harmless, but chronic GERD can lead to complications, such as:

  • Esophagitis – Inflammation of the esophagus, causing pain and difficulty swallowing.

  • Esophageal strictures – Narrowing of the esophagus due to scar tissue.

  • Barrett’s esophagus – A precancerous condition where the esophageal lining changes, increasing cancer risk.

Tips to Manage and Reduce Acid Reflux

1. Dietary Adjustments

  • Eat smaller, more frequent meals instead of large portions.

  • Avoid trigger foods like spicy, fatty, or acidic items.

  • Limit caffeine, alcohol, and carbonated drinks.

  • Chew gum after meals – This increases saliva production, which helps neutralize acid.

2. Lifestyle Changes

  • Maintain a healthy weight – Losing excess weight reduces pressure on the stomach.

  • Quit smoking – Smoking weakens the LES and worsens reflux.

  • Elevate your head while sleeping – Use an extra pillow or raise the bed’s head by 6-8 inches to prevent nighttime reflux.

  • Wait 2-3 hours after eating before lying down.

3. Over-the-Counter (OTC) Medications

  • Antacids (like Tums) – Provide quick relief by neutralizing stomach acid.

  • H2 blockers (like Ranitidine) – Reduce acid production for longer relief.

  • Proton pump inhibitors (PPIs) (like Omeprazole) – Help heal the esophagus by blocking acid production.

4. When to See a Doctor

See your doctor:

  • If symptoms persist despite lifestyle changes.

  • If you experience difficulty swallowing, unexplained weight loss, or severe chest pain.

  • If OTC medications don’t provide relief.

Final Thoughts

Acid reflux is a common but manageable condition. By understanding its causes and making simple lifestyle changes, you can reduce discomfort and prevent complications. If symptoms persist, don’t hesitate to seek medical advice.

Consult a top Gastroenterologist for the best advice

Dr Bhargav Vuppumalla, General Physician/ Internal Medicine Specialist

Dr Bhargav Vuppumalla

General Physician/ Internal Medicine Specialist

5 Years • MBBS MD GENERAL MEDICINE

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

550

83 Cashback

Dr Supreet Kumar, Surgical Gastroenterologist

Dr Supreet Kumar

Surgical Gastroenterologist

11 Years • MBBS ( Gold Medalist and Distinction Holder ) MS General Surgery ( Honors) DrNB Surgical Gastroenterology Fellowship Liver Transplant and HPB Surgery ( IAH ) FMAS MMAS HPB ( Masters in Minimal Access Surgery)

Delhi

Apollo Hospitals Indraprastha, Delhi

recommendation

89%

(400+ Patients)

800

120 Cashback

Dr Harish K C, Gastroenterology/gi Medicine Specialist

Dr Harish K C

Gastroenterology/gi Medicine Specialist

15 Years • MBBS MD DM MRCP(UK) (SCE-Gastroenterology and Hepatology)

Bangalore

Manipal Hospital, Bangalore

850

1000

No Booking Fees

Dr. Paramesh K N, Gastroenterology/gi Medicine Specialist

Dr. Paramesh K N

Gastroenterology/gi Medicine Specialist

16 Years • MBBS, MS ( General Surgery), DNB ( Surgical Gastroenterology)

Hyderabad

Sprint Diagnostics Centre, Hyderabad

813

750

Dr. Mohd Irtaza, Gastroenterology/gi Medicine Specialist

Dr. Mohd Irtaza

Gastroenterology/gi Medicine Specialist

11 Years • MBBS, MD Internal Medicine, DM Gastroenterology

Delhi

Apollo Hospitals Indraprastha, Delhi

recommendation

92%

(100+ Patients)

1500

150 Cashback

1500

No Booking Fees

Consult a top Gastroenterologist for the best advice

Dr Bhargav Vuppumalla, General Physician/ Internal Medicine Specialist

Dr Bhargav Vuppumalla

General Physician/ Internal Medicine Specialist

5 Years • MBBS MD GENERAL MEDICINE

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

550

83 Cashback

Dr Supreet Kumar, Surgical Gastroenterologist

Dr Supreet Kumar

Surgical Gastroenterologist

11 Years • MBBS ( Gold Medalist and Distinction Holder ) MS General Surgery ( Honors) DrNB Surgical Gastroenterology Fellowship Liver Transplant and HPB Surgery ( IAH ) FMAS MMAS HPB ( Masters in Minimal Access Surgery)

Delhi

Apollo Hospitals Indraprastha, Delhi

recommendation

89%

(400+ Patients)

800

120 Cashback

Dr Harish K C, Gastroenterology/gi Medicine Specialist

Dr Harish K C

Gastroenterology/gi Medicine Specialist

15 Years • MBBS MD DM MRCP(UK) (SCE-Gastroenterology and Hepatology)

Bangalore

Manipal Hospital, Bangalore

850

1000

No Booking Fees

Dr. Paramesh K N, Gastroenterology/gi Medicine Specialist

Dr. Paramesh K N

Gastroenterology/gi Medicine Specialist

16 Years • MBBS, MS ( General Surgery), DNB ( Surgical Gastroenterology)

Hyderabad

Sprint Diagnostics Centre, Hyderabad

813

750

Dr. Mohd Irtaza, Gastroenterology/gi Medicine Specialist

Dr. Mohd Irtaza

Gastroenterology/gi Medicine Specialist

11 Years • MBBS, MD Internal Medicine, DM Gastroenterology

Delhi

Apollo Hospitals Indraprastha, Delhi

recommendation

92%

(100+ Patients)

1500

150 Cashback

1500

No Booking Fees

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