Acid reflux diet: foods that trigger heartburn and how to find your own

Heartburn after dinner, a sour taste at night, a cough that is worse lying down — acid reflux is one of the most common digestive complaints, and food is the first thing people ask about. The honest answer has two parts: a short list of things that bother many people, and a much more personal list of what bothers you. The second one is worth finding.

This article is general information, not medical advice. Reflux that comes often, wakes you up, makes swallowing hard or comes with weight loss needs a doctor — and if a doctor gave you a diet, their list comes first.

The usual suspects

These foods and drinks are the ones most often linked to heartburn. Not everyone reacts to all of them:

• Large, fatty or fried meals — they stay longer in the stomach and relax the valve between the stomach and the oesophagus.
• Alcohol and fizzy drinks.
• Coffee and strong tea — for some people, not all.
• Chocolate and peppermint.
• Spicy food, tomatoes and citrus — they mostly irritate an oesophagus that is already sore.
• Onion and garlic, raw especially.

Studies that removed these foods one by one found weaker evidence than the lists suggest: cutting everything “just in case” rarely helps more than cutting what actually affects you, and it makes eating needlessly dull. That is why guidelines advise against blanket elimination and suggest noticing your own triggers instead.

When you eat matters as much as what

• Leave about three hours between dinner and bed. In one study, people who went to bed within three hours of dinner had several times the risk of reflux of those who waited four hours or more.
• Smaller meals — a full stomach pushes upwards. Four modest meals tend to be easier than two big ones.
• Raise the head of the bed by 15–20 cm if symptoms come at night, and try sleeping on the left side.
• If you carry extra weight, losing some of it is the change with the strongest evidence of all.

Finding your own triggers

Write down what you eat and, once a day, how your stomach felt — no more than that. After two or three weeks patterns start to show: maybe it is not coffee in general but coffee on an empty stomach, not tomatoes but a large late pasta. One bad evening proves nothing; a link that repeats over many days is worth acting on. Bring the notes to your doctor — they make the conversation much more useful.

How foodoo helps

foodoo has a special diet mode with a ready start for reflux and sixteen other cases — gastritis, gout, kidney disease, IBS, pregnancy, a medicine that does not mix with some foods and more. You choose it, then edit it rule by rule: avoid, limit, or just keep an eye on. Every dish you log — from a photo, words or a barcode — is read for what it is like: sour, spicy, fried, fatty, fizzy, with caffeine or mint. When a dish may not suit your diet, you see a quiet note on the result and in the diary, never a verdict, and you can tell it “this one has none of that”.

A late meal gets its own note if you ask for it. A short daily check-in (“how was your stomach today?”) lets the app look for your personal links between what you ate and how you felt — checked statistically so that chance does not pass for a pattern — and offers to warn you about a trigger only when the link holds. The doctor’s report includes the diet section, ready to share. The special diet is part of foodoo Premium.