Stomach Ulcers: Causes, Warning Signs and When to Act

Expert reviewed by Qurath Ain, Certified Nutritionist and Clinical Dietitian

Quick answer

A stomach ulcer is a specific medical condition, not just another name for indigestion or ‘gas trouble’. It is a localised erosion of the stomach’s protective mucous lining that lets acid irritate the lining and form an ulcer, and it usually develops over time.

Stress and spicy food alone don’t cause stomach ulcers. Most peptic ulcers are linked to Helicobacter pylori (H. pylori) infection or long-term use of non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen or naproxen. Excessive alcohol and tobacco can also irritate or inflame the stomach lining.

Common symptoms include aching, gnawing, or burning pain in the upper abdomen, heartburn, feeling unusually full after eating, bloating, nausea, frequent burping, and reduced appetite. Some people have no obvious symptoms. Because acid reflux, indigestion, gastritis, functional dyspepsia, and gallbladder problems can feel similar, an ulcer cannot be reliably diagnosed from symptoms alone.

Treatment depends on the cause. A healthcare professional may prescribe antibiotics along with acid-reducing medicines for H. pylori, or recommend changing or stopping NSAIDs where appropriate. Home remedies alone can delay proper diagnosis.

Eating meals at regular times, staying hydrated, including fruits and vegetables daily, choosing whole grains regularly, avoiding smoking, and taking medicines only as advised can support digestive health alongside treatment.

Seek medical attention promptly for severe or worsening abdominal pain, vomiting blood or material that looks like coffee grounds, black, tarry stools or blood in stools, unexplained weight loss, persistent vomiting, difficulty swallowing, or ongoing stomach pain that doesn’t improve.

You’ve probably heard someone say, ‘I think I have an ulcer.’ Maybe after weeks of stomach pain. Or because spicy food suddenly became difficult to eat.

Sometimes, people use the word ‘ulcer’ to describe almost any stomach discomfort. But a stomach ulcer is a specific medical condition — not just another name for indigestion or ‘gas trouble’.

Having said that, stomach ulcers are treatable. The important part is recognising the symptoms and knowing when it’s time to seek medical care instead of trying to manage the problem on your own.

What is a stomach ulcer?

A stomach ulcer is a localised erosion of the mucosal lining of the alimentary tract that comes in contact with gastric juices, resulting in a lesion and necrosis of the lining of the upper digestive tract. It often occurs in the duodenum, stomach, or oesophagus. Ulcers can also occur in the first part of the small intestine (called a duodenal ulcer). Together, stomach and duodenal ulcers are known as peptic ulcers.

The stomach normally protects itself from its own digestive acids with a layer of mucus. With localised erosion of this protective barrier, acid can irritate the lining, allowing an ulcer to develop.

Peptic ulcers form when there is an imbalance between the gastro-duodenal mucosal defence mechanism and the damage caused by gastric acid, pepsin, and superimposed injury from environmental or immunologic agents.

The mucous membrane lining the digestive tract erodes, causing a gradual breakdown of tissue. This breakdown causes epigastric pain, or a gnawing or burning pain, in the abdomen.

An ulcer isn’t something that appears overnight. It usually develops over time.

What causes stomach ulcers?

Contrary to popular belief, stress and spicy food alone don’t cause stomach ulcers. Today, doctors know that most peptic ulcers are linked to one of two major causes.

1. Helicobacter pylori (H. pylori) infection

H. pylori is a type of bacteria that can live in the stomach. In some people, it damages the stomach’s protective lining and increases the risk of developing an ulcer. Not everyone with H. pylori develops an ulcer, but it is one of the most common underlying causes.

2. Long-term use of certain pain relievers

Frequent or prolonged use of non-steroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen or naproxen, can reduce the stomach’s natural protective mechanisms and increase the risk of ulcers. This is one reason it’s important to use these medicines only as directed and to discuss long-term use with a healthcare professional.

Excessive alcohol consumption can irritate the stomach, erode the mucous membrane lining, and increase stomach acid. The use of tobacco products reduces bicarbonate secretion and mucosal blood flow, and leads to inflammation.

3. Injury or death of mucous-producing cells

4. Hyperacidity due to excess acid production in the stomach. The hormone gastrin stimulates the production of acid in the stomach.

What does a stomach ulcer feel like?

Symptoms can vary from person to person. Common signs include:

• Heartburn and aching or gnawing pain in the upper abdomen (epigastric pain) between the ribs and navel, or between the belly button and the breastbone
• Sometimes back pain or radiating pain, which can last for a few minutes to a few hours and continue or come and go for weeks. The use of antacids or acid reducers may control the pain, flatulence, bloating or distension, etc.
• Feeling unusually full after eating
• Bloating
• Nausea
• Frequent burping
• Reduced or lost appetite, and weight loss

Some people notice that the discomfort changes after eating, while others experience pain between meals or during the night. It’s also possible to have an ulcer without obvious symptoms.

Is every stomach pain an ulcer?

No. Many digestive conditions can cause similar symptoms. For example, acid reflux (heartburn), indigestion, gastritis, functional dyspepsia, and gallbladder problems, to name a few.

Because these conditions can overlap, it’s difficult to diagnose an ulcer based on symptoms alone. If stomach pain keeps returning, it’s important not to assume the cause.

Can food cause ulcers?

This is one of the biggest myths. Spicy food doesn’t cause stomach ulcers. Caffeine in beverages and food stimulates acid secretion in the stomach. This aggravates ulcers, but caffeine alone cannot be attributed to acid stimulation. Irregular meals and poor food habits also contribute to ulcers.

However, certain foods may make existing symptoms feel worse for some people. If you already have an ulcer or another digestive condition, your healthcare professional may recommend avoiding foods that consistently trigger discomfort while the underlying cause is being treated.

How are stomach ulcers treated?

Treatment depends on the cause. If an H. pylori infection is present, a healthcare professional may prescribe antibiotics along with medicines that reduce stomach acid.

If the ulcer is related to long-term NSAID use, your doctor may recommend changing or stopping those medicines, where appropriate, and prescribe treatment to allow the stomach lining to heal.

Trying to treat a suspected ulcer with home remedies alone can delay proper diagnosis.

Supporting your digestive health

Although food doesn’t usually cause ulcers, everyday habits still matter for overall digestive health. A balanced eating pattern can help support your digestive system while you follow the treatment plan recommended by your healthcare professional.

That includes eating meals at regular times, staying hydrated, including fruits and vegetables daily, choosing whole grains regularly, avoiding smoking, and taking medicines only as advised by your doctor.

Nutritional tips to manage ulcers

• Try to limit strong flavours, such as sour and spicy foods, that may cause irritation.
• Avoid hot beverages and prefer cold ones.
• Avoid or limit drinks such as alcohol and coffee (or anything with caffeine), which may stimulate acid secretion.
• Avoid foods high in fat, and chocolate. They irritate the stomach, are harder to digest, produce more stomach acid, and aggravate the condition.
• Spices such as cayenne and black pepper may increase stomach acid and cause superficial erosions.
• Probiotics inhibit the growth of H. pylori and reduce the side effects of eradication treatment.
• Consume vitamin B6, which is found in fish, poultry, beans, lentils, nuts, and seeds.
• Some of the rich food sources of vitamins B12 and B2 are chicken, fish, prawns, crabs, eggs, fortified cereals, mushrooms, beetroot, potato, milk, and milk products.
• Include omega-3 fatty acid-rich fish, mainly salmon, mackerel, sardines, and herring. Omega-3 helps in producing prostaglandins, which in turn protect the mucosal lining of the stomach and intestines.
• Antioxidant-rich fruits and vegetables help in managing ulcers.
• Keep yourself well hydrated and drink at least 8–10 glasses of water per day.
• Avoid bedtime snacks that stimulate acid production at night.
• Stop eating at least two hours before bedtime.
• Have meals in a relaxed atmosphere.
• Frequent small meals with less spicy food may increase comfort.
• Fish and chicken proteins are preferable to red meat, but ensure that you remove the fatty skin.
• Establish a regular meal pattern (breakfast, lunch, and dinner, with snacks as appropriate).
• Do not skip meals; have small, frequent meals at regular intervals.
• Avoid large, heavy meals, and follow portion guidance.

Whole grains also contribute to daily fibre intake. For example, Aashirvaad Namma Chakki 100% Khapli Atta provides about 11.4 g of fibre per 100 g, similar to whole wheat atta. Rotis prepared with it, alongside vegetables, dals, seasonal fruits, and adequate hydration, can be part of balanced meals that support everyday digestive health.

Warning signs you shouldn’t ignore

Seek medical attention promptly if you experience:

• Severe or worsening abdominal pain
• Vomiting blood or material that looks like coffee grounds
• Black, tarry stools or blood in stools
• Unexplained weight loss
• Persistent vomiting
• Difficulty swallowing
• Ongoing stomach pain that doesn’t improve

These symptoms may indicate a more serious problem and should be assessed without delay.

Ask Happy Tummy GPT

Try this prompt:

“I’ve been experiencing upper stomach pain, along with details about when it happens, my eating pattern, medicines I’m taking and any other symptoms. Can you help me understand what information I should discuss with my doctor? Please don’t diagnose me, but help me organise my symptoms before my appointment.”

The Bottom Line

Stomach ulcers are a specific medical condition, most commonly caused by H. pylori infection or long-term use of certain pain-relieving medicines — not simply by eating spicy food or feeling stressed.

Persistent upper abdominal pain, nausea, or discomfort deserves proper medical evaluation rather than self-diagnosis. While balanced meals, hydration, and healthy routines support overall digestive health, ulcers require appropriate diagnosis and treatment based on their underlying cause.

Sources

1. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Peptic Ulcers (Stomach or Duodenal Ulcers).
2. Mayo Clinic. Peptic ulcer: Symptoms and causes.
3. Ruggiero P. Use of probiotics in the fight against Helicobacter pylori. World Journal of Gastrointestinal Pathophysiology. 2014;5(4):384-391.
4. Aashirvaad Namma Chakki (manufacturer). Aashirvaad Namma Chakki 100% Khapli Atta: what it actually is, what it isn’t, and why the difference matters.

Disclaimer

This article is intended for general educational purposes only and should not be considered medical advice. If you have persistent stomach pain, vomiting blood, black stools, unexplained weight loss, severe abdominal pain, or other concerning symptoms, seek prompt medical attention.