GERD and Acid Reflux: Symptoms, Foods to Avoid and When to See a Doctor
Reflux happens when stomach contents, acid, partially digested food, sometimes bile, travel back up into the oesophagus. The valve at the top of the stomach (the lower oesophageal sphincter, or LOS) is meant to close after food goes down. When it relaxes at the wrong time, or doesn't close properly, the burning sensation in your chest and throat is the result.
A few episodes a year, especially after a big meal, is normal. Gastro-oesophageal reflux disease (GERD) is the diagnosis when reflux happens often enough, usually more than twice a week for several weeks, to affect your daily life or damage the oesophagus.
Food matters because what you eat affects three things at once: how much acid your stomach makes, how relaxed the LOS is, and how long food stays in your stomach. The good news is that for most people, the relationship between diet and reflux is fairly predictable, and adjustable.
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These are the foods that show up most consistently in the evidence and in the consulting room. Not everyone reacts to all of them, but if you have reflux and haven't audited your diet, this is where to start.
Fatty and fried foods. High-fat meals empty from the stomach more slowly and relax the LOS. Deep-fried, takeaway, creamy sauces, fatty cuts of meat, and rich desserts are the usual offenders.
Spicy foods. Chilli, hot sauces, and heavily spiced dishes can directly irritate the oesophagus and trigger reflux in people who are sensitive.
Tomato and tomato-based foods. Tomato sauce, pasta sauce, pizza, and tomato-heavy curries are acidic and a common trigger.
Citrus and acidic fruits. Oranges, lemons, limes, grapefruit, and pineapple. Their pH alone can drive symptoms, and they often appear in juice form (which concentrates the effect).
Onions and garlic, especially raw. Both relax the LOS and can ferment in the gut. Many people tolerate them cooked but not raw.
Chocolate. Combines fat, caffeine, and a compound called methylxanthine that relaxes the LOS. A common trigger that people are reluctant to give up.
Mint and peppermint. Counterintuitively, peppermint relaxes the LOS, so mint teas and peppermint sweets can make reflux worse, not better.
Caffeine and coffee. Both regular and decaf can be triggers. Coffee is often more of a problem than tea or other caffeinated drinks because of how concentrated it is.
Carbonated drinks. Soft drinks, sparkling water, and fizzy alcoholic drinks pump gas into the stomach and increase pressure on the LOS.
Alcohol. Relaxes the LOS, increases acid production, and slows stomach emptying. Beer and wine, especially red wine, are classic triggers.
Large or late meals. Volume matters as much as content. A heavy meal eaten close to bedtime is one of the most reliable ways to provoke night-time reflux, regardless of what the meal contains.
Reflux-friendly eating isn't restrictive, it's about emphasising lower-fat, lower-acid options and reasonable portions.
Lean protein. Skinless chicken, fish, lean cuts of red meat, eggs, tofu, and legumes. Grilled, baked, or poached rather than fried.
Whole grains. Oats, wholegrain bread, brown rice, wholewheat pasta, and quinoa. Porridge for breakfast is a classic reflux-friendly choice.
Most vegetables. Leafy greens, broccoli, cauliflower, carrots, beans, peas, cucumbers, zucchini. Cooked rather than raw can be easier on a sensitive gut.
Lower-acid fruits. Bananas, melons, apples (most varieties), pears, peaches.
Plain dairy in moderation. Many people tolerate small servings of milk and yoghurt, especially low-fat. Some don't, worth experimenting.
Healthy fats in moderation. Olive oil, avocado, nuts in small portions. Fat is a trigger when meals are high-fat overall, less so when you're using it sparingly.
Hydrating drinks. Water, herbal teas (avoid mint), milk if tolerated. Spread fluid through the day rather than gulping with meals.
Ginger. Often well-tolerated and has some evidence for digestive comfort. Fresh ginger in cooking or weak ginger tea, not strong ginger drinks loaded with sugar.
The single biggest dietary lever for most people isn't a specific food, it's portion size and timing. Smaller meals, eaten earlier, with the last meal at least 3 hours before bed, tend to do more than any single food substitution.
Diet is one piece of a bigger picture. The other factors most likely to be driving symptoms:
- Weight. Excess weight around the middle increases pressure on the LOS. Even modest weight loss often improves reflux.
- Smoking. Relaxes the LOS and slows stomach emptying. One of the most reliable triggers.
- Eating quickly. Less chewing, more air swallowed, more pressure on the stomach.
- Lying down after meals. Gravity helps. Three hours upright before bed makes a real difference.
- Tight clothing or belts. Increases abdominal pressure.
- Pregnancy. Both hormonal changes and physical pressure on the stomach. Often improves after delivery, but worth managing during.
- Some medications. Including some painkillers (especially anti-inflammatories), some blood pressure medications, and some osteoporosis medications. Worth flagging to your GP if reflux started after a medication change.
- Stress and poor sleep. Both increase acid sensitivity and reduce healing time.
For when fatigue is dragging on alongside reflux, see Why Am I Tired All the Time? 8 Medical Causes. For sleep that won't come right because of night-time symptoms, see How Much Sleep Do Adults Actually Need.
Most reflux improves with food, weight, sleep, and timing changes. But some symptoms shouldn't be self-managed.
See a GP if any of these apply:
- Symptoms more than twice a week for several weeks
- Symptoms that wake you at night
- Heartburn that needs medication on most days to control
- Difficulty or pain swallowing
- Food or drink getting stuck on the way down
- Persistent unexplained cough, sore throat, or hoarse voice
- New symptoms after age 50
Urgent, get medical care now if any of these:
- Severe chest pain, especially with shortness of breath, sweating, or pain radiating to the arm or jaw, heart problems can present as reflux-like pain and need to be excluded
- Vomiting blood or what looks like coffee grounds
- Black, tarry stools
- Unintentional weight loss with reflux
- Persistent vomiting or being unable to keep food down
- Severe difficulty swallowing
These can point to bleeding, ulcers, narrowing of the oesophagus, or rarely, oesophageal cancer, all of which are treatable when picked up early.
Reflux disrupting your life?
A consult for ongoing reflux is rarely just about a script. Expect:
- A careful history. Pattern, timing, triggers, what's been tried, other symptoms, medications, family history, weight, smoking, alcohol.
- Screening for red flags. Anything that suggests a complication or another diagnosis.
- A treatment plan that fits. Lifestyle and dietary advice tailored to your situation, often with a short trial of acid-reducing medication if symptoms are frequent or severe.
- Investigations where indicated. A gastroscopy (a camera test of the oesophagus and stomach) is sometimes needed, usually if there are red flag symptoms, if symptoms aren't improving with treatment, or if you're over 50 with new symptoms. Your GP can arrange a referral to a gastroenterologist if needed.
- Review. Reflux often needs a few months of consistent management before things settle, so follow-up matters.
When acid-reducing medication is appropriate, a GP can prescribe from drug classes including proton pump inhibitors (PPIs) and H2 receptor blockers, or recommend antacids for occasional symptoms. Most medication strategies for GERD are time-limited courses with a clear plan to taper, not lifelong prescriptions, unless there's a specific reason. We use drug-class language here because brand and molecule names are restricted by Australian advertising rules, your GP will choose what fits your situation, accounting for other medications and conditions.
Abby Health is an online-first Australian clinic. Our GPs are AHPRA-registered. When you book a consult, Abby AI, our medical AI, prepares a clinical brief for your doctor, including your symptom timeline, what you've already tried, medications, and any relevant medical history, so they're already informed when you connect.
For reflux and GERD, your Abby GP can take a careful history, screen for red flags, give you tailored dietary and lifestyle advice, prescribe a short course of acid-reducing medication if appropriate, arrange investigations through your local pathology or imaging centre, and refer to a gastroenterologist where needed. If you're an Abby patient with a regular doctor at the clinic, your reflux history is already with them, you don't have to explain it again every time.
For more on the underlying drivers of ongoing tiredness that often travels with reflux, see Why Am I Tired All the Time?. If a script is needed, see How to Refill a Prescription Online. If you need time off work while symptoms settle, see how to get an online medical certificate in Australia.
Abby Health consultations are bulk billed for eligible patients with a valid Medicare card.
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Heartburn is the headline symptom, but GERD (gastro-oesophageal reflux disease) wears more disguises than most people expect. The common presentations:
- Heartburn: a burning discomfort rising behind the breastbone, often after meals or when lying down
- Regurgitation: sour or bitter fluid reaching the throat or mouth
- Night symptoms: waking with coughing, choking sensations or a burning chest, because lying flat lets acid travel further
- Throat and voice signs: morning hoarseness, repeated throat clearing, a lump-in-the-throat feeling, and a dry cough that lingers
- Less obvious signs: bad breath despite good dental care, worn tooth enamel, and burping that brings up small amounts of fluid
Some people have what clinicians call silent reflux: throat and voice symptoms without much heartburn at all. If a cough has hung around for weeks, reflux is one of the causes a GP will consider, alongside the ones covered in our guide to a cough that won't go away.
One caution: chest pain that is new, severe, crushing, spreading to the arm or jaw, or accompanied by breathlessness or sweating is a 000 call, not a reflux question. Heart problems and reflux can feel similar, and that call is never wrong to make.
The terms get used interchangeably, but they describe different things.
Reflux is the event: stomach contents travelling up into the oesophagus. Everyone refluxes occasionally; a big meal, a late night curry, one drink too many.
Heartburn is the symptom: the burning feeling reflux can cause. Occasional heartburn after an obvious trigger is normal and not a disease.
GERD is the diagnosis: reflux that happens often enough or severely enough to affect your life or damage the oesophagus. The usual working definition is troublesome symptoms two or more times a week, or complications from acid exposure. In Australia you will also see GORD, the same condition with the local spelling of oesophageal.
The distinction matters because the response differs. Occasional heartburn is managed with the food and habit changes covered above. GERD deserves a proper conversation with a GP about diagnosis, treatment and monitoring, including whether medication has a role, which we cover separately in our guide to reflux medication and PPIs.
For most people, GERD is diagnosed from the story alone: typical symptoms, their frequency, and how they respond to initial treatment. A GP will ask when symptoms happen, what triggers them, how long they have been going on, and whether anything about the pattern has changed. There is no blood test for reflux, and most people never need a procedure.
Investigations enter the picture when red flags are present (trouble swallowing, unexplained weight loss, bleeding, persistent vomiting, or symptoms starting after 50), when symptoms do not respond to treatment, or when the diagnosis is genuinely unclear. The main test is endoscopy: a camera examination of the oesophagus and stomach done by a specialist, arranged through a referral. Your GP can organise that referral and any related tests through a normal consultation, including online.
Because GERD is diagnosed on history and pattern, continuity helps: a doctor who has seen your reflux story over several visits makes better calls than one meeting it for the first time.
Most reflux, managed sensibly, causes discomfort rather than damage. But years of frequent acid exposure can inflame the oesophagus (oesophagitis), and in a small proportion of people the lining changes over time in ways that need monitoring, a condition called Barrett's oesophagus. This is not something to be alarmed about; it is something to be aware of, because it changes the plan from "manage the symptom" to "manage the symptom and keep an eye on things".
Long-term reflux is worth an occasional review even when it feels controlled. Sensible check-ins cover whether your triggers have shifted, whether medication is still needed at the same level, and whether anything in the red-flag list has appeared. Booking the same GP for those reviews means the trend is visible, which is exactly the point of them.
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