Gastro-oesophageal Reflux Disease
Acid reflux that causes symptoms or damage
What it is
GERD occurs when stomach contents reflux into the oesophagus often enough to cause troublesome symptoms — typically heartburn and regurgitation — or to damage the oesophageal lining. Occasional reflux is normal physiology; GERD is when it becomes frequent, symptomatic, or injurious.
Why it matters
GERD is very common and treatable, but two things are frequently missed. First, weight loss is the most effective lifestyle intervention and is consistently under-emphasised relative to dietary trigger avoidance. Second, long-standing reflux can cause Barrett's oesophagus, a precursor to oesophageal cancer — which is why persistent symptoms and alarm features should never be managed indefinitely with over-the-counter acid suppression alone.
What BioSignal knows about treating this
What works for Gastro-oesophageal Reflux Disease
BioSignal’s clinical summary, most important first.
- Weight loss (the most effective lifestyle intervention)
- Avoiding meals within ~3 hours of lying down
- Elevating the head of the bed for nocturnal symptoms
- Smoking and alcohol reduction
- Proton pump inhibitors — effective; use at the lowest effective dose and review the need periodically
- Anti-reflux surgery or endoscopic therapy in selected refractory cases (clinician-directed)
New to this? Read these first
How this usually unfolds
- Recognize risk factors
- Get diagnosed
- Track key biomarkers
- Lifestyle first
- Evidence-based treatment
- Long-term monitoring
Who is at risk
- Overweight and central obesity (the dominant modifiable risk)
- Hiatus hernia
- Smoking
- Late or large evening meals
- Pregnancy
- Certain medications
How it's diagnosed
Typical heartburn and regurgitation are usually diagnosed and treated clinically, with a trial of acid suppression. Endoscopy is indicated for alarm features — difficulty swallowing, painful swallowing, weight loss, bleeding, anaemia, persistent vomiting — or for long-standing symptoms warranting Barrett's assessment. pH monitoring is used when the diagnosis is uncertain.
Key biomarkers
Biomarker pages for this condition are on the roadmap.
Lifestyle
Explore this condition across BioSignal
Related Foundations
Related body systems
Frequently asked questions
What's the single most effective thing I can do for reflux?
If you carry excess weight, lose some. Weight loss has better evidence than any dietary trigger list — and trigger avoidance, while widely recommended, has surprisingly weak evidence outside of the individual foods you personally notice.
Are proton pump inhibitors dangerous long-term?
PPIs are effective and, for people who need them, the benefits generally outweigh the risks. Observational studies have linked long-term use to various harms, but these associations are prone to confounding and are not established as causal. The sensible position: take them if indicated, at the lowest effective dose, and review the need periodically — rather than either fearing them or taking them indefinitely without review.
When should reflux be investigated?
If you have difficulty or pain on swallowing, unintentional weight loss, vomiting, bleeding, or anaemia — or if symptoms are long-standing — see a clinician. Persistent reflux can cause Barrett's oesophagus, and that is not something to self-manage indefinitely from a pharmacy shelf.
Evidence summary
Acid suppression with PPIs has strong randomised evidence for symptom relief and healing of oesophagitis. Weight loss has the best evidence among lifestyle measures, while broad dietary trigger elimination is weakly supported. The link from chronic reflux to Barrett's oesophagus and oesophageal adenocarcinoma is well established.
References & sources
- ACG Clinical Guideline for the Diagnosis and Management of GERD
- AGA clinical practice updates on Barrett's oesophagus
Educational information — not medical advice
Is this condition page clear, accurate, and useful? Your feedback shapes what we review next.
Give feedback