Acid reflux happens when stomach contents flow back into the oesophagus; many people feel it as heartburn, but reflux can also cause throat or breathing symptoms. When these episodes are frequent or lead to ongoing irritation, a doctor may diagnose gastroesophageal reflux DiseaseGERD (chronic reflux disease).
Common symptoms of acid reflux and gastroesophageal reflux disease
The most typical acid reflux symptoms are a burning sensation in the chest (heartburn) and regurgitation (sour liquid or food coming back up).
Other common GERD symptoms are:
- A ‘lump in the throat’ feeling
- Trouble swallowing (dysphagia)
- Hoarseness or throat irritation
- Night-time cough (acid reflux cough)
Not everyone experiences reflux the same way. Some people mainly notice classic heartburn and regurgitation, while others have more “extra-oesophageal” symptoms such as cough, hoarseness, or throat discomfort – sometimes with minimal burning. These symptoms often get worse after eating, when bending over, or when lying down, especially later on the day. Night-time reflux can be particularly bothersome because lying flat makes it easier for stomach contents to travel upward.
What causes acid reflux?
Most cases of acid reflux are related to the lower oesophageal sphincter (LES), the “valve” between the stomach and oesophagus, relaxing at the wrong time or becoming weakened, allowing stomach contents to flow back up.
While it’s often assumed to be caused by “too much acid”, reflux is more commonly linked to mechanical or pressure-related factors that affect how well this valve functions. For example, a fuller stomach, increased abdominal pressure, or structural changes such as a hiatal hernia.
Risk factors for gastroesophageal reflux disease and frequent heartburn include:
- Obesity (increased abdominal pressure can promote backflow)
- Pregnancy (both pressure and hormonal changes can worsen reflux)
- Hiatal hernia (which can weaken the barrier between the stomach and oesophagus)
- Smoking
- Certain medications (such as some anti-inflammatory drugs)
- Large meals and eating late at night
Treatment options for acid reflux and GERD
The aim of treatment for acid reflux is to reduce symptoms, heal irritation, and prevent complications. Most people improve with a stepwise approach: start with lifestyle and diet changes, add medicines if needed, and consider procedures only when symptoms persist despite appropriate care.
Dietary and lifestyle changes
Daily measures can make a meaningful difference, especially for frequent or night-time symptoms:
- Lose weight if needed (even modest weight loss can reduce pressure on the stomach).
- Stop smoking, as tobacco can worsen reflux.
- Avoid late meals and try not to lie down for 2-3 hours after eating.
- Elevate the head of the bed for night-time symptoms (raising the head and upper torso is usually more effective than adding extra pillows).
- Eat smaller portions more often than very large meals (large meals can increase stomach pressure).
- Avoid tight clothing around the waist if it triggers symptoms (pressure around the abdomen may worsen reflux).
- Why meal timing is especially important
- After eating, the stomach is fuller and pressure increases. If you lie down too soon, gravity no longer helps
- keep contents in the stomach, making reflux more likely. That’s why avoiding late meals is common,
- practical recommendation.
Acid reflux diet: foods to avoid and foods that help
An acid reflux diet usually focuses on identifying triggers, because not everyone reacts to the same foods.
Foods that cause acid reflux (common triggers):
- Fatty foods
- Spicy foods
- Tomato-based products (for some people)
- Chocolate
- Coffee and caffeinated beverages
- Alcohol
- Carbonated drinks
Foods that may help with acid reflux (often better tolerated):
- Whole grains (e.g., oats and other high-fibre options)
- Vegetables (generally low in fat and gentle for many people)
- Lean proteins (prepared with less fat)
- Non-citrus fruits (as tolerated)
Tip:
Consider keeping a short food-and-symptom diary for 1-2 weeks. If a specific item reliably triggers symptoms, reducing it is often more useful than following overly restrictive diets.
Medicine and prescription treatments
For mild or occasional symptoms, non-prescription antacids may help. These offer quick, short-term relief, but they don’t treat underlying inflammation and shouldn’t be used daily for severe symptoms without advice.
For more persistent symptoms, doctors may recommend H2 blockers or proton pump inhibitors (PPIs). These reduce acid production, often allowing the oesophageal lining to heal. Some are available over the counter, while others require a prescription depending on dose and local regulations.
When medical procedures are needed
If symptoms don’t improve with lifestyle changes and medicines, doctors may consider anti-reflux surgery (such as fundoplication) or selected endoscopic options to address issues in the valve between the stomach and oesophagus.
The role of gut microbiota in GERD: Why diet and lifestyle can matter beyond symptoms
Emerging research suggests that both the gut microbiota and the oesophageal microbiota may play a role in GERD-related processes, including inflammation and changes in the mucosal barrier. Some genetic studies even point to a potential bidirectional relationship between GERD and dysbiosis.
Because everyday factors such as meal timing, body weight, smoking, and dietary habits are central to symptom control, they may also indirectly influence the microbial environment. This is why lifestyle changes can have a meaningful impact not only on symptoms, but also on the underlying mechanisms involved in reflux for many people.
When to see a doctor for acid reflux
Seek medical advice if symptoms:
- Occur frequently (e.g., most days or more than twice a week) or are getting worse
- Don’t improve with appropriate lifestyle changes or short-term over-the-counter treatment
- Include difficulty swallowing, unexplained weight loss, persistent vomiting, vomiting blood, or black stools (alarm symptoms that need evaluation)
Complications of untreated GERD
- Oesophagitis (inflammation of the oesophagus)
- Barrett’s oesophagus (pre-cancerous changes associated with an increased risk of oesophageal cancer)
- Strictures (narrowing of the oesophagus from scarring, which can cause swallowing problems)
Other frequently asked questions
- What is the difference between acid reflux and GERD?
Acid reflux can be occasional; GERD is chronic reflux that causes troublesome, repeated symptoms or leads to irritation and/or complications over time.
- What are the most common GERD symptoms?
Heartburn and regurgitation are most common, but some people mainly notice throat irritation, hoarseness, or a chronic cough, especially at night.
- What causes acid reflux?
Usually, a weakened or inappropriately relaxing lower oesophageal sphincter (LES), often influenced by pressure-related factors such as obesity, pregnancy, large meals, and hiatal hernia.
- What is the best treatment for acid reflux?
It depends on the severity of the case and each person’s specific circumstances. Nonetheless, most treatment plans include lifestyle and dietary changes, and sometimes medication at the discretion of a healthcare professional. If you are experiencing any of the symptoms mentioned in this article, we recommend you consult with your healthcare provider.