Acid Reflux and Heartburn: Causes, Relief and Red Flags
Acid reflux is stomach contents washing back up into the food pipe because the muscular valve at the top of the stomach is not closing firmly enough. It causes burning behind the breastbone, a sour or bitter taste, and sometimes a night-time cough, hoarse voice or the feeling of a lump in the throat. Meals, lying down within three hours of eating, excess weight around the middle, smoking, paan and pregnancy all make it worse. Most people are managed without any test: raising the head of the bed, moving the last meal of the day earlier, losing a few kilograms and a course of acid-lowering medicine settle the great majority. A camera test of the food pipe and stomach is reserved for people with alarm features — food sticking on the way down, vomiting blood, black stools, unexplained weight loss, or symptoms that keep coming back after treatment. Crucially, pain in the chest is not always acidity: pain with sweating, breathlessness, or spreading to the jaw or arm should be treated as a possible heart attack until a doctor says otherwise.
Health writers · Aslam Clinic
What reflux actually is
Where the food pipe meets the stomach there is a ring of muscle that stays shut except when you swallow. Its job is to let food down and keep acid in. When it relaxes at the wrong moment, or when pressure inside the abdomen pushes past it, stomach contents wash upwards. The stomach lining is built to sit in acid; the food pipe is not, and it registers the contact as burning.
Everybody refluxes a little without noticing. It becomes gastro-oesophageal reflux disease — GORD, or GERD — when it happens often enough to cause troublesome symptoms or to inflame the lining. Note what is not in that definition: the amount of acid. Most people with reflux make a perfectly normal amount in the wrong place, which is why the problem is about pressure, timing and the valve rather than an over-acid stomach. A hiatus hernia, where part of the stomach slides up through the muscular sheet separating chest from abdomen, weakens that valve and is a very common finding after middle age. On its own it is not dangerous.
Reflux or the heart?
This is the question the article exists to answer safely. The two can feel genuinely similar, and no list of features is reliable enough to be used alone — which is precisely the point. The table shows what tends to point each way, not what proves it.
| Feature | Leans towards reflux | Leans towards the heart |
|---|---|---|
| What it feels like | Burning, rising, sour | Pressure, tightness, heaviness, a band around the chest |
| What brings it on | Meals, lying down, bending over | Exertion, walking uphill, emotional stress, cold |
| What relieves it | Antacids, sitting up, belching | Rest within a few minutes |
| Where it spreads | Up to the throat, with a sour taste | Jaw, neck, shoulder, either arm, between the shoulder blades |
| What comes with it | Regurgitation, hoarseness, cough at night | Sweating, nausea, breathlessness, a feeling of doom |
| Who it happens to | Any age; often a long history of the same symptom | More concerning over 40, or with , smoking, or family history |
Two warnings about using that table. People with diabetes and older women often have heart attacks with unusually mild symptoms, sometimes felt mainly as indigestion. And a good response to an antacid does not exclude a cardiac cause — this has been studied and it is not a safe test. If the pain is new, severe, or different from your usual heartburn, be assessed.
What makes it worse here
The standard advice sheet on reflux was written for a household that eats at seven in the evening. A great deal of Pakistan eats at ten, after work, after guests or after taraweeh, and then lies down. Timing turns out to be one of the most powerful levers available, and it costs nothing.
- Late, large dinners. A full stomach and a horizontal body is the classic setup. Aim for three hours upright after eating, and make the evening meal the smaller one where you can.
- Fried and very fatty food — parathas, samosas, pakoras, heavy korma — slows stomach emptying and lowers pressure in the valve.
- Chilli, in the people it affects. Not everyone with reflux is chilli-sensitive, but a substantial minority is. Two weeks off and two weeks on is a fair test.
- Strong chai and coffee, especially on an empty stomach, and fizzy drinks, which distend the stomach.
- Smoking, paan, gutka, chaalia and naswar. Tobacco and areca nut both relax the valve, and betel quid is separately classified as carcinogenic by the WHO's cancer agency.
- Weight around the abdomen, which raises pressure inside the belly. Even a five per cent loss shows up in the symptoms.
- Some medicines, including , certain blood-pressure tablets, nitrates and iron. Never stop a prescribed medicine yourself — ask whether an alternative exists.
- Pregnancy, where hormones relax the valve and the growing uterus raises abdominal pressure. It settles after delivery, and several treatments are safe meanwhile, so ask rather than enduring it.
What to do first, before any tablet
- Leave three hours between your last meal and lying down. If that is impossible some nights, at least avoid making the largest meal the last.
- Raise the head of the bed by 10 to 15 cm with blocks under the legs at the head end. Extra pillows do not work: they bend you at the waist and raise abdominal pressure, which is the opposite of what you want.
- Sleep on your left side. The anatomy of the stomach means left-side sleeping reduces reflux measurably compared with the right.
- Eat smaller meals more often rather than one large plate.
- Lose weight if your waist has grown — the most effective long-term change for most people.
- Stop smoking and chewing paan, which helps reflux and removes a major cancer risk from the same organ.
- Keep a two-week diary of what you ate, when, and when symptoms came. Your own triggers beat any generic list.
Medicines, and how long to take them
| Group | Examples | What it does | What to know |
|---|---|---|---|
| Antacids and alginates | Magnesium and aluminium salts; alginate preparations | Neutralise acid on contact; alginates form a raft on the stomach contents | Relief within minutes, lasting an hour or two. Good for occasional symptoms. Aluminium-containing ones can constipate. |
| H2 receptor blockers | Famotidine | Reduce acid production for several hours | Slower than an antacid, weaker than a PPI, useful at night. Ranitidine, once standard here, was withdrawn worldwide in 2020. |
| Proton pump inhibitors | Omeprazole, esomeprazole, pantoprazole, rabeprazole | Shut down acid production at the source; the most effective group | Taken 30 to 60 minutes before a meal to work properly. Intended as a defined course with review, not indefinitely. |
Proton pump inhibitors deserve their own paragraph, because in Pakistan they are bought across the counter and taken for years without anyone reviewing them. They are effective and broadly safe, and for people with proven inflammation of the food pipe or Barrett's changes, long-term treatment is correct. Taken open-endedly without a reason, they carry a small increase in gut infections, may reduce absorption of vitamin B12, magnesium and calcium over years, and can mask symptoms that needed investigating. Two practical rules: take it before food, not after, because it only blocks pumps that are switching on; and if you have been on one for more than eight weeks, that is the moment to see a doctor rather than buy another strip.
Helicobacter pylori, a that lives in the stomach lining, is common in Pakistan and causes most stomach ulcers and much chronic . It is not usually the cause of pure heartburn, but where the complaint is indigestion rather than clean burning, current guidance is to test for it with a stool or breath test and treat it if present. Treatment is a specific combination of antibiotics and acid suppression, taken exactly as prescribed and completed — partial courses are the main driver of in this organism, and resistance is already high in South Asia.
When a camera test is needed
An upper passes a thin flexible camera into the food pipe, stomach and first part of the small intestine, and can take a . It is not needed to diagnose ordinary reflux and finds very little when done on everyone with heartburn. It becomes the right test with alarm features — difficulty or pain swallowing, vomiting blood or coffee-ground material, black stools, unexplained weight loss, persistent vomiting, an abdominal mass, or unexplained — and when symptoms return promptly every time treatment stops, or begin for the first time later in life.
The reason for caring about years of untreated reflux is Barrett's oesophagus, in which the lining of the lower food pipe changes to a more acid-resistant type. It is not cancer and most people with it never develop cancer, but it raises the risk enough to be worth knowing about and sometimes monitoring. Long-standing weekly heartburn, particularly in a man over 50 who smokes and carries weight around the middle, is the pattern where an endoscopy is worth asking about even without alarm features.
When to see a doctor
Book an appointment if heartburn is happening twice a week or more, if it disturbs your sleep, if over-the-counter treatment has stopped working, if you have been buying acid tablets for more than a month, or if you have any alarm feature above. Go straight to hospital for chest pain with sweating, breathlessness or spread to the arm or jaw, for vomited blood, or for black stools.
If your main problem is lower down — pain with a change in bowel habit, bloating that comes and goes, alternating constipation and looseness — that is a different pattern, and our guide to irritable bowel syndrome covers it. Many people have both, and treating the reflux alone leaves them half better.
Common questions
Still not sure what to do?
Reading about a symptom only goes so far. A doctor who can ask you questions and examine you will get further in ten minutes than any article can.
