Do Microbiome Tests Work?


Printed November 5, 2025 03:04AM

I’ve handled power indigestion, painful burps, reflux, and bloating for the previous 15 years. In 2010, I underwent a spread of diagnostic exams—a colonoscopy, an endoscopy, a gastric emptying take a look at, and a few bloodwork—earlier than I used to be identified with Celiac illness. I subsequently reduce out gluten. My signs improved for just a few years, however regardless of consuming a strict gluten-free food plan, they reappeared a few years in the past.

In 2023, I visited a brand new gastroenterologist to see if one other well being situation could also be affecting my intestine. But once more, I underwent a sequence of expensive, time-consuming exams that finally decided my gastrointestinal (GI) system was in fine condition, regardless that my signs steered in any other case.

Pissed off, I reached out to a nutritionist who steered I do a GI-MAP test. This at-home stool take a look at examines your microbiome, which is the group of micro organism, fungi, and viruses that naturally line your GI tract. These exams, usually sold by personal corporations and may value wherever between $100 and $500, can inform you if there’s an overgrowth of particular organisms that may very well be triggering digestive issues and irritation, she instructed me. Determined for solutions, I wired her $300, and he or she ordered me a take a look at package. Right here’s what I realized about microbiome testing and the way my intestine impacts my total well being and efficiency.

How Do Microbiome Exams Work?

Rising evidence suggests the microbiome performs a task within the growth of many power circumstances—equivalent to allergies and heart disease. “A balanced microbiome is linked to higher temper, vitality ranges, and total well being, whereas an imbalanced one can contribute to irritation, digestive points, and even power illness,” says Arpana Church, a neurobiologist with experience in digestive ailments.

Microbiome kits declare they might help determine the bugs in your intestine which may be contributing to health conditions like IBS, autoimmune ailments, pores and skin points like pimples and psoriasis, mind fog, and even psychological well being issues like despair and nervousness.

They’re additionally easy to make use of. My supplier ordered the package on-line. When it arrived, I crammed a small tube with my poop, then mailed it off to a laboratory that examines the micro organism in my stool pattern. My outcomes, together with an interpretive information, arrived inside ten days.

What My Microbiome Take a look at Outcomes Informed Me

In accordance with the package, I had Helicobacter pylori (H. pylori), a bacterium that infects your abdomen lining and causes irritation and ulcers. There was additionally an irregular progress of Staphylococcus aureus (the bacterium that causes staph infections) and Streptococcus spp., one of many micro organism answerable for strep throat. Each of those micro organism set off intestinal irritation and free stools. The take a look at additionally detected Methanobacteriaceae—a household of micro organism that produces methane gasoline and is linked to constipation, bloating, and IBS.

My gastroenterologist’s (not the identical one who ordered my package) response to my take a look at outcomes? “I don’t make scientific selections off of kits like these.” Moreover, he had taken a biopsy of my intestines throughout a current endoscopy and located no indicators of H. pylori. He would somewhat go off that, a scientifically sound measure, than a comparatively new take a look at package. For sure, I used to be disillusioned and confused.

Docs Aren’t Positive How Correct Microbiome Exams Are

In accordance with Church, there are a few the reason why clinicians don’t belief these kits fairly but.

Science Hasn’t Pinned Down What a “Wholesome” Intestine Appears Like

The primary is that the science backing their utilization remains to be in its infancy. The primary purpose for that is that there isn’t a common definition for what a “wholesome microbiome profile” even is, she says. “A microbe that appears ‘excessive’ in your report could also be innocent—and even regular for you,” she says. Moreover, our microbiomes are at all times altering—week to week and even each day, in keeping with Church. “What you ate, current sickness, journey, or antibiotics can shift outcomes,” she says.

I used to be decided to achieve some actionable insights from my outcomes. I interviewed Maggie Stanislawski, a biomedical researcher on the College of Colorado Anschutz Medical Campus, to get her perspective. Did the overgrowth of methane-producing micro organism in my intestine imply nothing? The reply is murky.

Apparently, there are a selection of Methanobacteriaceae species that may have totally different results, so it’s unclear what, if something, this basic overgrowth means, in keeping with Stanislawski. Additionally, “Methanobacteriaceae isn’t a ‘unhealthy’ bug,” she says. In actual fact, the bacterium helps break down carbohydrates, not directly contributing to the manufacturing of short-chain fatty acids (SCFAs), she says. SCFAs, for context, provide a spread of health benefits. They’re anti-inflammatory and comprise protecting properties for our mind, coronary heart, and immune techniques.

Everybody’s Microbiome Is Totally different

However the H. pylori in my stool pattern? Certainly that’s a purple flag, I assumed. However once more, no. A few of these kits can produce inaccurate outcomes. One study discovered that when seven totally different microbiome exams had been used to investigate the identical stool pattern, the outcomes assorted drastically.

Simply because H. pylori is detected doesn’t imply it’s a problem—“it may very well be current and never trigger issues and that may even be wholesome, particularly in case you’ve had it because you had been very younger,” Stanislawski says. These could also be giving me points, she says, however these ranges could also be regular—for me.

So, Can Microbiome Take a look at Kits Inform You Something?

Sure. These kits do a strong job of figuring out infectious diarrhea-causing pathogens—equivalent to  C. diff or Campylobacter—that normal medical exams additionally catch—and could be handled with antibiotics. However in the case of all the opposite microbes? There, sadly, isn’t a clear-cut resolution, Church says. “These kits not often result in confirmed, tailor-made remedies that outperform good scientific care and food plan fundamentals,” Church says.

Whereas it might be too quickly to achieve particular takeaways and actionable steps from these kits, there could also be a time within the close to future when that modifications. In accordance with Church, we want extra analysis that investigates how numerous therapy approaches, primarily based on their outcomes, impression folks’s well being outcomes.

The perfect factor to do in case you order a microbiome take a look at is to work with an expert, Church says. These kits usually comprise suggestions for numerous herbs and probiotic dietary supplements you possibly can take to heal your microbiome (the purpose being to extend useful micro organism and reduce dangerous ones).

If something, Church hopes the kits assist folks deal with the steps recognized to enhance intestine well being: consuming a food plan wealthy in fermented meals, equivalent to sauerkraut, kimchi, and kefir, and low in ultra-processed meals. Then, incorporate quite a lot of fiber-rich and prebiotic meals—equivalent to leeks, bananas, and oats—that microbes thrive on.

How Athletes Can Profit From Intestine Well being Testing

For years, my GI ache has impacted my exercises. Acid reflux disease has despatched sharp pains up my chest after I jog, usually inflicting me to wrap up early. And, in sure cases, stomach cramps and indigestion have prevented me from even with the ability to get out the door within the first place.

Athletes can flip to exams for insights on learn how to enhance their microbiome to scale back irritation and improve restoration, says Church. She says research suggests a wholesome microbiome might help you extract vitality from meals, scale back irritation, and recuperate sooner from intense train. Meaning much less ache and higher efficiency. A extra diverse intestine microbiota might also assist optimize vitality metabolism, finally offering you with extra gasoline to crush your health objectives.

Whereas the microbiome package was unable to heal my intestine, it did function a reminder to brush up on the entire little issues that assist my intestine run easily.

Need extra Exterior well being tales? Sign up for the Bodywork newsletter. Able to push your self? Enter MapMyRun’s You vs. the Year 2025 operating problem.



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