Helicobacter pylori (H. pylori) is a spiral-shaped bacteria that lives in the stomach lining. A large share of the world’s population carries it, often from childhood, and most never know. For some people, though, it is the hidden reason behind years of burning, gnawing stomach pain.
Why It Matters
H. pylori survives stomach acid by burrowing into the mucus layer and neutralizing acid around itself. Over time it can cause:
- Chronic gastritis (an inflamed stomach lining)
- Peptic ulcers: it is one of the two leading causes, alongside anti-inflammatory painkillers
- Iron deficiency and low B12 in some people
- A higher risk of stomach cancer over the long term, which is why treating it is recommended when it is found
Symptoms
Most carriers have no symptoms. When it does cause problems, the typical signs are:
- Burning or gnawing upper-stomach pain, often worse on an empty stomach
- Bloating, burping, feeling full quickly
- Nausea and poor appetite
- Unexplained iron-deficiency anemia
Warning signs like black stools, vomiting blood, trouble swallowing or weight loss need urgent evaluation.
Who Should Get Tested
- Anyone with a current or past peptic ulcer
- Ongoing indigestion or upper-stomach pain
- Unexplained iron deficiency or low B12
- Family history of stomach cancer
- Long-term NSAID or aspirin users, in some cases
- People from regions where H. pylori is very common who have stomach symptoms
How Testing Works
- Urea breath test: you drink a solution and breathe into a bag. It is accurate and shows active infection.
- Stool antigen test: a small stool sample. It is also accurate for active infection.
- Endoscopy with biopsy: used if you need a scope anyway, like with warning signs or older age.
- Blood antibody tests are less useful, because they can stay positive after the infection is gone.
Important: PPIs, antibiotics and bismuth can cause false negatives. You are usually asked to stop PPIs about 2 weeks before a breath or stool test and to avoid antibiotics and bismuth for about 4 weeks. Check with your doctor before stopping any medication.
Treatment
H. pylori is treated with a combination of drugs taken for usually 10 to 14 days, typically:
- A PPI to lower acid, plus
- Two or more antibiotics, often with bismuth (known as bismuth quadruple therapy)
The exact regimen depends on local antibiotic resistance and your history. Some tips that improve success:
- Finish the whole course, even if you feel better after a few days.
- Expect side effects like a metallic taste, nausea, loose stools and dark stools from bismuth. They are annoying but usually manageable.
- Get retested at least 4 weeks after treatment, off PPIs, to confirm it is gone. Treatment does not always work the first time, and a second, different regimen is often needed.
What About Natural Options?
Mastic gum, probiotics, broccoli sprouts and cranberry have been studied. Some probiotics may reduce antibiotic side effects and slightly improve cure rates when added to standard treatment. But no natural product reliably clears H. pylori on its own. Use them alongside medical treatment, not instead of it.
The Bottom Line
H. pylori is common, often silent, and a major cause of gastritis and ulcers. If you have recurring stomach burning, an ulcer history or unexplained iron deficiency, ask for a breath or stool test. Treatment is a short course of combined medication, and confirming it worked afterward is just as important.