H. Pylori: The Silent Intruder In Your Stomach

8 minutes ago

9 min read

If you have been dealing with bloating, nausea, reflux, stomach pain, excessive burping or unexplained nutrient deficiencies, there may be more going on beneath the surface. One bacterium I frequently see show up when working with clients who have digestive complaints is Helicobacter pylori, better known as H. pylori.

H. pylori is incredibly common. In fact, it is estimated that close to half of the world's population carries it. Some people can have H. pylori for years without obvious symptoms, while for others it can contribute to chronic gastritis, ulcers, digestive dysfunction and difficulty absorbing certain nutrients.

This is why I don't like to look at digestive symptoms in isolation. Bloating isn't always just about the food you ate, reflux isn't always simply "too much stomach acid," and low iron or B12 isn't always just about how much of those nutrients you're consuming. Sometimes we need to look deeper at what is happening with digestion and the health of the stomach itself.

What Is H. Pylori?

H. pylori is a bacterium that can colonize the protective lining of the stomach. It has developed some pretty impressive survival mechanisms that allow it to live in an environment that would normally kill many other bacteria. One of those mechanisms involves an enzyme called urease, which helps H. pylori create a more favorable environment around itself so it can survive.

Over time, an H. pylori infection can cause inflammation of the stomach lining, known as gastritis, and in some people it can contribute to the development of peptic ulcers. It can also affect normal stomach physiology, including acid secretion, which matters because adequate stomach acid plays an important role in breaking down protein, absorbing nutrients and helping protect us from unwanted microbes entering farther into the digestive tract.

I've written quite a bit about this because stomach acid is one of those pieces of digestion that often gets overlooked. If you want to understand it more deeply, read Could Low Stomach Acid Be the Problem? and Could Your Diet Be Causing Low Stomach Acid?. I also have a post on 4 Simple Ways to Test Stomach Acid at Home.

How Do You Get H. Pylori?

H. pylori is believed to spread primarily through oral-to-oral or fecal-to-oral transmission, and contaminated food or water can also play a role, particularly in areas where sanitation is limited. Many people acquire H. pylori during childhood and may carry it for decades without realizing it, which is one reason it can sometimes be found among multiple members of the same household.

It is also important to clarify something I previously wrote about H. pylori and stomach acid. We can't say that low stomach acid is a prerequisite for developing H. pylori. The relationship is more complicated than that. What we do know is that H. pylori itself can alter the stomach environment and affect acid production, and once normal stomach function is disrupted, that can have effects farther down the digestive tract.

What Are the Symptoms of H. Pylori?

One of the confusing things about H. pylori is that not everyone who has it experiences symptoms. When symptoms do occur, they can look very different from person to person, and some of them overlap with other digestive conditions.

Common symptoms and signs can include:

Upper abdominal discomfort, burning or pain
Bloating or abdominal distention
Frequent burping or belching
Nausea
Feeling overly full after eating
Decreased appetite
Reflux or heartburn
Indigestion
Stomach discomfort when the stomach is empty
Unexplained iron deficiency or anemia
Low vitamin B12
Fatigue associated with nutrient deficiencies

This is also why symptoms alone can't tell us whether someone has H. pylori. Bloating, nausea and reflux can have many different causes, so testing and looking at the bigger digestive picture can be incredibly helpful.

H. Pylori, Stomach Acid and Digestion

This is where H. pylori becomes particularly interesting from a functional nutrition perspective. The relationship between H. pylori and stomach acid is complex, and the infection can affect acid production differently depending on where and how extensively the stomach is affected.

Why does that matter? Because digestion starts at the top.

Stomach acid helps us break down protein, activate digestive processes and release nutrients from the food we eat. It also serves as part of our natural defense system against microorganisms entering through food. When this first stage of digestion isn't working well, the effects can travel downstream, and people may notice bloating, belching, fullness, nausea, reflux or changes in their bowel movements.

This is one reason I often talk about working "north to south" when addressing digestion. Rather than jumping immediately to the lower intestine or simply adding probiotics, I want to understand what is happening in the stomach and upper digestive tract first. If food isn't being properly broken down at the beginning of the digestive process, everything downstream has a harder job to do.

H. Pylori and Nutrient Deficiencies

Another piece of H. pylori that I think deserves more attention is its relationship with nutrient status, particularly iron and vitamin B12.

Research has found an association between H. pylori infection and iron deficiency and iron-deficiency anemia. Chronic inflammation of the stomach and changes in gastric physiology may interfere with iron absorption, and H. pylori may also influence how iron is utilized within the body.

This matters because sometimes we keep giving someone iron without asking the bigger question: Why is their iron low in the first place?

Ferritin, which is our primary iron-storage protein, is one of the markers I routinely look at in blood work. If you've been told your iron is low or your ferritin keeps dropping, you can read more in my post Decoding Ferritin: How Blood Tests Reveal Clues About Iron, Inflammation, and Your Well-Being.

H. pylori has also been associated with vitamin B12 deficiency. B12 absorption is a multistep process that depends in part on a healthy stomach environment, stomach acid and intrinsic factor. When the stomach lining is chronically inflamed or normal gastric function is altered, B12 absorption may suffer.

I have an entire article on this nutrient because B12 affects so much more than energy. If you're dealing with fatigue, brain fog, anemia, tingling or other unexplained symptoms, read The Vital Importance of Vitamin B12: A Key Player in Health and Wellness.

This is a good example of why I like looking at blood work and gut health together. If someone has stubborn low ferritin or B12 along with bloating, reflux, nausea or other digestive symptoms, we shouldn't automatically assume the answer is simply a higher-dose supplement. We need to consider whether something is interfering with digestion and absorption.

How Is H. Pylori Tested?

There are several ways H. pylori can be identified, and the appropriate test depends on the individual and whether we're looking for an initial infection or confirming that treatment has been successful.

Urea Breath Test: This is a commonly used non-invasive test. You swallow urea containing a labeled carbon molecule, and if H. pylori is present, its urease enzyme breaks down the urea. The resulting labeled carbon dioxide can then be measured in your breath.

Stool Antigen Test: A stool antigen test looks for H. pylori proteins in the stool and can be used both for initial testing and to confirm eradication following treatment.

Endoscopy and Biopsy: If someone has significant gastrointestinal symptoms or other clinical indications, a gastroenterologist may perform an upper endoscopy and take a small tissue sample from the stomach lining.

Blood Antibody Testing: Blood testing can detect antibodies against H. pylori, but because antibodies can remain elevated after an infection has cleared, this type of testing generally cannot tell us whether an infection is currently active.

What About the GI-MAP?

In my practice, I use the GI-MAP, which is comprehensive stool testing and uses PCR technology to look for microbial DNA, including H. pylori, along with many other organisms and digestive markers.

One of the reasons I like comprehensive stool testing is that I am rarely interested in looking at one organism in isolation. I want to understand the larger digestive environment. Are there additional opportunistic organisms? What do the beneficial bacteria look like? Are there signs that may point toward impaired digestive function or inflammation? And most importantly, how does all of that information fit with the client's symptoms, history, diet and blood work?

This bigger-picture approach is also why I often start with gut testing when someone has symptoms that may not initially seem digestive. Your gut can influence nutrient absorption, inflammation, immune function and many other systems throughout the body. I explain much more about this connection in Why I Start with Gut Testing: How Your Gut Affects Every System of Your Body.

A positive result should always be interpreted in clinical context, and conventional testing may also be appropriate when determining treatment or confirming that an infection has been eradicated.

Why Do We Want to Address H. Pylori?

I sometimes hear the question, "If H. pylori is so common and I'm not that sick, why do we need to do anything about it?" The answer is that symptoms are only one part of the story.

Persistent H. pylori can contribute to chronic stomach inflammation, peptic ulcers, changes in stomach acid production, iron and B12 deficiencies and ongoing digestive discomfort. It is also associated with an increased long-term risk of certain stomach diseases. That doesn't mean every person with H. pylori will experience these problems, but it does mean we shouldn't automatically dismiss the finding.

The goal isn't simply to make your bloating disappear for a few days. We want to understand what is driving the dysfunction and create a healthier digestive environment.

How Is H. Pylori Treated?

Conventional H. pylori treatment generally uses a combination of medications designed to eradicate the bacteria. Because antibiotic resistance has increased substantially, treatment recommendations have changed over the years, and the exact regimen should be determined with a physician or gastroenterologist.

A Functional Approach to Supporting H. Pylori

When I work with someone who has H. pylori, my approach isn't simply to find something that will "kill" the bacteria. We also need to support the environment in which the infection has been able to persist and help restore healthy digestive function.

Depending on the individual, a protocol may include targeted botanical compounds such as mastic gum, berberine-containing herbs, DGL licorice or sulforaphane, along with specific probiotics and nutrients that help support and protect the stomach lining. Some of these compounds have been studied specifically for H. pylori, while others are used to support the gastric environment and digestive function during the process.

Just as importantly, I want to work north to south. That means looking at how well someone is chewing, whether they are eating in a relaxed state, how their stomach is functioning, whether they are breaking down their food properly and what is happening farther down the digestive tract. If the stomach lining is irritated, we may need to support and soothe it while we are addressing the infection rather than focusing exclusively on antimicrobial support.

This is also where comprehensive testing can be valuable. H. pylori may not be the only finding. There may be other bacterial overgrowths, changes in beneficial bacteria, digestive insufficiency or inflammation that need to be considered when building the protocol.

The goal is not only to address H. pylori. It is to help the digestive system function better as a whole, while working alongside appropriate medical care when needed.

Don't Forget the Nervous System

Another part of digestive health that deserves attention is the nervous system. Chronic stress does not mean you caused your H. pylori infection, but stress and autonomic nervous-system activity can influence gastrointestinal motility, secretion, sensation and how well we digest our food.

You can eat a great diet and take all the "right" supplements, but if you're eating while answering emails, rushing from one thing to another, barely chewing your food or spending most of your day in a heightened stress state, you're missing an important part of digestion.

I recently wrote much more about this in Your Gut Isn't Working Alone: The Nervous System Connection to Gut Healing, including the gut-brain axis, vagus nerve and why I encourage clients to create more of a "rest and digest" environment around meals.

This is another part of that north-to-south approach. Before we ask the stomach to do its job, we want to give the body the right signals to prepare for digestion in the first place.

The Bottom Line

H. pylori is common, but common doesn't necessarily mean we should ignore it. If you're experiencing ongoing bloating, nausea, reflux, upper abdominal discomfort, unexplained iron or B12 deficiency or other digestive symptoms, testing may help uncover something that has been missed.

When H. pylori does show up, I don't want to look only at the bacteria. I want to understand the bigger picture:

How well are you digesting?
Are you absorbing your nutrients?
Is stomach function compromised?
Are there other microbial imbalances?
What does your blood work show?
How are your diet, stress and nervous system affecting digestion?

That is the difference between simply chasing symptoms and taking a more comprehensive look at digestive health. We aren't just asking, "What can I take to get rid of this?" We're asking why the digestive system isn't functioning optimally and what we can do to help restore it.

If you're struggling with digestive symptoms and want to understand what may be driving them, book your free 15-minute consult and let's talk about whether functional testing may be helpful for you.

Scientific References

American College of Gastroenterology Clinical Guideline: Treatment of Helicobacter pylori Infection. Current clinical guidance regarding H. pylori treatment, antibiotic resistance and confirmation of eradication.

Hudak L, et al. An Updated Systematic Review and Meta-analysis on the Association Between Helicobacter pylori Infection and Iron Deficiency Anemia. Research examining the relationship between H. pylori infection, iron deficiency and anemia.

Lahner E, et al. Micronutrients (Other Than Iron) and Helicobacter pylori Infection: A Systematic Review. A review examining the relationship between H. pylori infection and micronutrient status, including vitamin B12.

Helicobacter pylori and Gastric Cancer. A review of the relationship between chronic H. pylori infection, gastric inflammation and gastric disease.

Complementary and Dietary Medicines in Eradicating Helicobacter pylori. A review of human research investigating herbal and dietary compounds used in H. pylori management.