Acid reflux, also known as GERD (Gastroesophageal Reflux Disease), is a condition where stomach acid flows back into the esophagus. This condition is often more bothersome at night, especially when lying down to sleep.
Common symptoms include heartburn, nausea, a dry cough, and a bitter or sour taste in the mouth. In some people, these symptoms can also lead to sleep disturbances due to persistent discomfort at night.
Acid reflux often worsens when lying down. One of the main causes is the loss of gravity, which normally helps keep stomach contents down. Therefore, understanding the correct sleeping position is a simple yet effective step to help reduce the risk of acid reflux at night.
Why Does Stomach Acid Often Rise While Sleeping?
Between the esophagus and stomach is a muscular valve called the lower esophageal sphincter (LES) . This valve prevents stomach contents from flowing back up. It opens when food enters the stomach and closes again to allow stomach contents to rise.
Under certain conditions, the LES muscle can weaken or fail to close properly (hiatal hernia). As a result, stomach acid can flow back into the esophagus, causing a burning sensation (heartburn).
When a person is standing or sitting, gravity plays a role in keeping stomach contents down. Conversely, when lying down, gravity's influence is lessened, allowing acid to more easily rise into the throat.
Symptoms of GERD
Symptoms that often appear include:
- Burning sensation in the chest (heartburn)
- Regurgitation (sour or bitter taste in the mouth)
- Nauseous
- Chronic dry cough
- Sleep disorders
- Heartburn
The following factors can trigger stomach acid to rise while sleeping:
- Eating too close to bedtime
- Consumption of fatty, spicy, sour, or caffeinated foods
- Overweight
- Smoking or alcohol consumption habits
- Pregnancy
- Wearing clothes that are too tight
Recommended Sleeping Positions for Acid Reflux
To help reduce the risk of acid reflux at night, it's important to know which sleeping positions can minimize pressure on the stomach and prevent reflux. Here's an explanation:
1. Sleep on your left side
Sleeping on your left side is considered the best position for acid reflux sufferers. This position helps keep the stomach below the esophagus, reducing the risk of acid reflux.
2. Higher Head Position
Elevating your upper body and head by about 15–20 cm can help utilize gravity to prevent acid reflux. You can use an extra pillow or a special support under the head of the mattress.
Sleeping Positions to Avoid When You Have Acid Reflux
While some sleeping positions can help relieve symptoms, others can actually worsen acid reflux. Here are some sleeping positions to avoid:
1. Sleep on your right side
This sleeping position on your right side can actually trigger an increase in stomach acid because the anatomical position of the stomach makes it easier for acid to flow into the esophagus when you lie on your right side.
2. Sleeping on your back
Sleeping on your back usually seems comfortable, but the supine position allows stomach acid to rise more easily into the esophagus, especially if the head is not supported higher.
3. Sleeping on your stomach
Lying on your stomach can increase pressure on your stomach, triggering acid reflux. Furthermore, this position is detrimental to breathing and spinal and neck health.
How to Prevent Acid Reflux Before Bedtime
In addition to improving your sleeping position, the following habits can help reduce the risk of nighttime reflux:
- Avoid eating 2–3 hours before bedtime.
- Limit consumption of trigger foods such as acidic, spicy, fatty, and caffeinated foods.
- Maintain ideal body weight.
- Avoid smoking and alcohol consumption.
- Wear loose clothing when sleeping so as not to put pressure on your stomach.
When Should You Consult a Doctor?
Occasional acid reflux can generally be managed with lifestyle changes and over-the-counter medications. However, you should be wary if the symptoms occur more than twice a week, feel increasingly severe, or persist despite adjusting your diet and sleeping position. Symptoms such as difficulty swallowing, frequent vomiting, severe chest pain, significant weight loss, black stools, or significant sleep disturbances should also not be ignored, as they could indicate GERD, which requires further treatment.
Complications of GERD
If left untreated, GERD can cause:
- Inflammation of the esophagus (esophagitis)
- Narrowing of the esophagus
- Barrett's esophagus (risk of cancer)
If you experience these symptoms, consult an internist or gastroenterologist immediately. Through a proper examination, your doctor can determine the cause of your symptoms, prescribe appropriate treatment and therapy, and prevent the risk of complications in your esophagus and digestive system.
Article written by dr. Apriliana Adhyaksari, Sp.PD, Subsp.G.E.H (K), M.Kes, FINASIM (Internal Medicine Specialist - Consultant Gastro Entero Hepatology, EMC Alam Sutera & Tangerang Hospital).