Gastritis Diet: Foods to Eat, Limit and What Helps

01Definition

What gastritis is

The NHS explains that gastritis is when the lining of the stomach becomes irritated (inflamed). It can cause tummy pain, indigestion, feeling full and bloated, nausea, vomiting and not feeling as hungry as usual.

Causes include infection with the bacterium Helicobacter pylori (H. pylori), anti-inflammatory painkillers such as ibuprofen and aspirin, drinking too much alcohol, being very stressed and unwell, stomach surgery such as gastric bypass, and a problem with the immune system attacking the stomach lining (autoimmune gastritis). If it is not treated, the NHS notes, gastritis may get worse and cause a stomach ulcer.

02Expectations

What diet can and cannot do

NIDDK explains that, according to researchers, eating, diet and nutrition do not play an important role in causing most cases of gastritis or gastropathy. In a small number of cases, foods, drinks or supplements may play a role: a large amount of alcohol can cause acute erosive gastropathy, food allergies may cause gastritis and, rarely, iron supplements may cause gastritis.

So there is no list of foods that heals gastritis on its own. The NHS explains that treatment depends on the cause and may include antibiotics, medicines that control stomach acid, reviewing anti-inflammatory painkillers or aspirin with your doctor, and stopping alcohol. Diet changes help ease symptoms while that treatment works.

03Triggers

Common trigger foods and drinks

To ease symptoms such as indigestion, the NHS advises against:

• acidic food and drink, such as orange juice
• fizzy drinks
• spicy food
• fatty food
• alcohol

It also advises reducing drinks that contain caffeine, such as tea, coffee, cola and energy drinks. Many of these are the same foods that worsen reflux; see our guide to foods to avoid with acid reflux.

04Habits

Eating patterns that may help symptoms

The NHS advises not eating 3 to 4 hours before going to bed, and losing weight if you are overweight. These measures help with indigestion, one of the main symptoms of gastritis.

If pain appears soon after meals, keep a record of what and how much you ate. Our guide on why your stomach hurts after eating explains other possible causes that are worth ruling out with your doctor.

05Tolerance

Foods often well tolerated

The sources reviewed do not give a list of foods that suit everyone with gastritis. The NHS advice focuses on what to limit: acidic, fizzy, spicy and fatty food, caffeine and alcohol. A practical approach is to build meals from foods that are not on that list and that you know you tolerate.

Tolerance varies from person to person, and NIDDK notes that food allergies can occasionally cause gastritis. If a specific food repeatedly causes symptoms, tell your doctor rather than cutting out whole food groups on your own.

06Alcohol

Alcohol, coffee and smoking

The NHS advises not drinking alcohol and not smoking to ease symptoms. If gastritis is caused by alcohol, treatment includes stopping drinking. NIDDK notes that drinking a large amount of alcohol can cause acute erosive gastropathy.

For coffee and other drinks with caffeine, the NHS advice is to reduce the amount you drink. If you regularly take anti-inflammatory painkillers or aspirin, talk to your doctor: do not stop a prescribed medicine on your own, as your doctor may suggest an alternative.

07Nutrition

Iron and B12: when deficiency matters

NIDDK explains that H. pylori gastritis can cause problems absorbing iron from food, leading to iron-deficiency anaemia; treating the infection and taking iron supplements can improve it. Autoimmune gastritis can cause problems absorbing iron and vitamin B12, which may lead to iron-deficiency anaemia and pernicious anaemia.

In autoimmune gastritis, doctors may recommend iron, folic acid and vitamin B12 supplements, and vitamin B12 injections if pernicious anaemia develops. These are decided after tests; NIDDK notes that iron supplements can rarely cause gastritis themselves.

08Supplements

Probiotics and supplements: evidence

The sources reviewed do not recommend probiotics or specific supplements for gastritis. NIDDK advises talking with your doctor before using any dietary supplements, vitamins or complementary or alternative medicines or practices, for safety reasons.

If H. pylori is found, the NHS explains that it is treated with antibiotics; there is no evidence in these sources that diet or supplements remove the infection. The NHS notes that your doctor might arrange a breath test, a stool test or a blood test to find the cause.

09Sources

Where the sources differ

NIDDK (last reviewed August 2019) focuses on whether diet causes gastritis, concluding that it does not in most cases, and on nutritional problems such as iron and B12 deficiency. The NHS (August 2026) gives practical advice on foods and drinks that may worsen symptoms. Both fit together: avoiding triggers relieves symptoms, but does not replace treating the cause.

The NHS lists warning signs: see a GP if pain or indigestion lasts more than a week or keeps coming back, and get urgent advice for loss of appetite, feeling full after small meals, weight loss, a lump in the tummy, difficulty swallowing or repeated vomiting. Once these are assessed and with medical treatment in place, our nutrition service in Bilbao can plan an individual diet (consultations are in Spanish).

10Summary

In summary

Gastritis is inflammation of the stomach lining, usually caused by H. pylori, anti-inflammatory painkillers, alcohol or autoimmunity. Diet does not cause most cases or cure it, but limiting caffeine, acidic, fizzy, spicy and fatty food, alcohol, smoking and late meals can ease symptoms while the cause is treated.

A personal tolerance table is more useful than a fixed food list. Note each food or drink, the amount, the time, any symptom and its intensity. After two to three weeks, review it with your doctor or dietitian to identify real triggers and avoid unnecessary restrictions.