Helicobacter pylori, or H. pylori, is a type of bacteria that infects the stomach lining. It is very common, but many people who have it do not know they are infected.
Researchers who examined data from nearly 3 million people around the world estimated that H. pylori affected about 43% of the global population between 2011 and 2022. Rates vary by age, location, and other factors, but the main point is that this is not a rare infection.
For some people, H. pylori causes no obvious symptoms. For others, it can contribute to stomach inflammation, ulcers, digestive problems, and difficulty absorbing iron. It is also linked to an increased risk of stomach cancer.
Symptoms alone cannot confirm or rule out an active infection. Appropriate testing, treatment, and follow-up are all important.
What Symptoms Can H. pylori Cause?
Many people with H. pylori have no symptoms. When symptoms do occur, they may include:
Upper abdominal pain or discomfort
Bloating or gas
Nausea or vomiting
Indigestion
Frequent burping
Feeling full after eating a small amount
Reduced appetite
If the infection contributes to an ulcer or bleeding, symptoms can become more serious. Black or tarry stools, vomiting blood, severe abdominal pain, persistent vomiting, or unexplained weight loss require prompt medical attention.
How H. pylori Affects Gut Health
When H. pylori infects the stomach lining, it can cause ongoing inflammation called gastritis.
Over time, the infection may contribute to:
Chronic stomach inflammation
Peptic ulcers
Changes in stomach acid
Gastrointestinal bleeding
Difficulty absorbing iron
Iron-deficiency anemia
An increased long-term risk of stomach cancer
The National Institute of Diabetes and Digestive and Kidney Diseases notes that H. pylori gastritis can make it harder for the body to absorb iron from food. The infection may be worth considering when someone has iron-deficiency anemia without a clear explanation.
However, H. pylori does not explain every digestive symptom. Diet, medications, stress, immune function, other infections, and the broader gut microbiome can all affect how you feel.
This is why I look at test results in the context of the full health picture.
Read my article on gut microbiome and testing.
Why Household Testing May Matter
H. pylori can spread between people and tends to occur within families and households. It may spread through contact with saliva, vomit, stool, or contaminated food and water.
Current guidance from the American College of Gastroenterology recommends that adult household members of someone diagnosed with H. pylori discuss testing for active infection with their own health care providers. Someone can carry the infection without having any symptoms.
When I diagnose a patient with H. pylori, I encourage the adults in their household to consider testing. Established patients can arrange this through my practice, while others should discuss testing with their primary care provider.
This does not mean everyone in the household is infected. It simply means that family members may share an exposure, making testing worth discussing.
How I Test for H. pylori
When the main question is whether an active H. pylori infection is present, I usually start with a standard stool antigen test through Labcorp or Quest.
This simple, noninvasive test looks for signs of an active infection in a stool sample. Patients do not need a full GI-MAP just to check for H. pylori.
A urea breath test is another noninvasive option performed through an outside lab. In my practice, however, I generally prefer stool antigen testing.
An upper endoscopy with a biopsy can also identify H. pylori. Most patients do not need this test, but I may coordinate with gastroenterology when there is concern about an ulcer, bleeding, or another condition that needs further evaluation.
Blood antibody testing may remain positive after an infection has cleared, so it may not reliably show whether an infection is currently active or occurred in the past.
Preparation matters as certain medications can affect the accuracy of H. pylori testing. I provide each patient with preparation instructions based on the test being ordered and their individual needs.
How Is H. pylori Treated?
When testing confirms an active H. pylori infection, I can prescribe and manage treatment through my practice.
A commonly recommended first treatment is 14-day bismuth quadruple therapy. Despite the complicated name, it refers to a combination of:
An acid-reducing medication
Bismuth
Two antibiotics
A different treatment may be more appropriate based on medication allergies, previous antibiotic use, past treatment attempts, medication availability, and other individual factors.
Treatment can involve several medications taken multiple times a day, so following the instructions carefully matters. If side effects or other concerns make treatment difficult, I work with the patient to determine the appropriate next step.
Finishing Treatment Is Not the Final Step
Everyone treated for H. pylori should complete follow-up testing to make sure the infection is gone.
Feeling better does not always mean it has cleared.
I typically use a standard H. pylori stool antigen test to confirm that treatment worked. Follow-up testing is generally completed at least four weeks after finishing antibiotics, and proper preparation is important for an accurate result.
The process is straightforward: identify the infection, treat it appropriately, and confirm that it is gone.
Where GI-MAP Testing May Fit
You do not need a full GI-MAP just to check for H. pylori. If that is the only question we are trying to answer, I usually start with a standard stool antigen test.
GI-MAP may be helpful when someone has persistent or complex digestive symptoms that call for a broader look at gut health. This at-home stool test checks for H. pylori along with other information about the gut environment, including microbial patterns, digestive function, inflammation, and immune markers.
Whether broader testing makes sense depends on your symptoms, health history, previous results, and what we are trying to understand. More testing is not always better. I want to choose the test that best fits the situation.
Read my article on how GI-MAP testing may help evaluate persistent gut symptoms.
What About Mastic Gum?
Mastic gum is a natural resin that has been studied for its possible effects on H. pylori.
A small study found that it had some activity against the bacteria, but it cleared the infection in only a minority of participants and was less effective than antibiotic treatment.
The research is interesting, but it is limited. Mastic gum and other herbal products are not proven replacements for the standard treatment used to clear H. pylori.
Supplements can also interact with medications and may not be appropriate for everyone. Any herbal approach should be considered within the patient’s overall treatment plan.
What if Symptoms Continue After Treatment?
Clearing H. pylori does not guarantee that every digestive symptom will disappear.
Bloating, reflux, constipation, diarrhea, abdominal discomfort, and food-related symptoms may have other causes. If symptoms remain after testing confirms that the infection is gone, I take another look at the full picture.
That may include diet, medications, previous antibiotic use, digestive function, gut microbiome balance, inflammation, immune health, hormones, metabolism, stress, sleep, and other digestive conditions.
We treat what has been confirmed, make sure the infection has cleared, and then continue investigating anything that remains.
Concerned About H. pylori or Persistent Gut Symptoms?
If you are experiencing persistent digestive symptoms, unexplained iron deficiency, or concerns about possible H. pylori exposure, the first step is understanding your full health story.
All new patients begin with a Discovery Session. This gives me time to review your symptoms, health history, medications, previous testing, possible exposures, and goals.
From there, I can determine whether a standard H. pylori stool antigen test, broader GI-MAP testing, treatment, or another care path makes sense. If specialist evaluation is needed, I can also coordinate with gastroenterology.
Learn More About the Discovery Session
Sources
American College of Gastroenterology. H. pylori patient overview.
Chey WD, Howden CW, Moss SF, et al. ACG Clinical Guideline: Treatment of Helicobacter pylori Infection. American Journal of Gastroenterology. 2024;119:1730–1753.
Li Y, Choi H, Leung K, et al. Global prevalence of Helicobacter pylori infection between 1980 and 2022: a systematic review and meta-analysis. The Lancet Gastroenterology & Hepatology. 2023.
National Institute of Diabetes and Digestive and Kidney Diseases. Eating, Diet, and Nutrition for Gastritis and Gastropathy.
Dabos KJ, Sfika E, Vlatta LJ, Giannikopoulos G. The effect of mastic gum on Helicobacter pylori: a randomized pilot study. Phytomedicine. 2010.
The content provided is for informational purposes only and does not intend to substitute professional medical advice, diagnosis, or treatment.
