They are not the same
Gastritis is inflammation of the stomach lining. It can be acute or chronic, and its most frequent causes are Helicobacter pylori infection, continued use of anti-inflammatories and alcohol.
Gastro-oesophageal reflux is the passage of gastric contents into the oesophagus. The problem here is not the stomach lining but the competence of the sphincter between them, and the pressure it bears.
They share symptoms — burning, epigastric discomfort — but management differs enough that confusing them leads to useless recommendations.
The mechanical factors nobody mentions
- Meal volume. A very full stomach raises pressure and makes upward passage easier. Eating the same total amount split into more meals changes the picture noticeably.
- The interval between dinner and lying down. Three hours minimum. Probably the intervention with the best effort-to-result ratio, and the one most people ignore.
- Sleeping position. Raising the head of the bed by 15 to 20 centimetres — the bed, not the pillows — reduces night-time episodes. Sleeping on the left side also helps because of stomach anatomy.
- Abdominal fat. It raises intra-abdominal pressure directly. A moderate reduction in visceral fat improves reflux in many patients without changing any food.
- Tight clothing at the waist. It sounds trivial, and yet.
What to genuinely avoid
- Alcohol. Relaxes the oesophageal sphincter and irritates the lining. The most consistent item on the list.
- Very fatty meals. They delay gastric emptying, prolonging exposure.
- Citrus and tomato in sensitive people, through direct acidity.
- Mint and chocolate. Both relax the sphincter.
- Carbonated drinks. They raise intragastric pressure.
- Coffee in some people. Not in everyone, and that difference matters.
Note that most of this list has an explainable mechanism. Foods appearing on internet lists without an associated mechanism are usually folklore.
Milk and other advice that aged badly
Milk. It relieves for a few minutes because it buffers the acid present. Afterwards its protein and calcium content stimulates acid secretion, and the net result is frequently worse than not drinking it. The most repeated popular tip and one of the least useful.
Bicarbonate. Quick relief followed by rebound acid secretion. Acceptable as an occasional resort; not as a daily habit.
“Eat every three hours” as an obligation. In gastritis it can make sense to reduce meal volume, but eating continuously keeps acid secretion active all day. It depends on the case.
Potato or aloe juice on an empty stomach. No clinical evidence supporting it for these conditions.
If Helicobacter pylori is present
If your gastritis is associated with confirmed H. pylori infection, treatment is antibiotic and prescribed by your doctor. No nutritional intervention eradicates the bacterium.
What nutrition contributes in that setting is support during treatment — which usually produces digestive discomfort and alters the microbiota — and subsequent recovery of the lining and nutritional status. Iron and vitamin B12 deficiency is frequently associated, because chronic gastritis compromises their absorption.
How to find your triggers
- For two weeks, record what you eat, in what volume, at what time, and when symptoms appear. Most people discover timing and volume patterns before food patterns.
- Adjust mechanical factors first: meal volume, dinner-to-sleep interval, bed elevation. They usually resolve a significant part of the picture.
- Only then remove individual food candidates and reintroduce them one at a time after two symptom-free weeks.
Removing twenty foods at once tells you nothing about which was the problem and impoverishes your diet unnecessarily. If the picture does not improve, see the gastritis and reflux page and consider assessment in clinic.