New research supports testing for mycoplasma and ureaplasma in RPL.
If you’ve experienced recurrent pregnancy loss (RPL), you know how devastating it is.
You’ve managed to conceive – which is already a challenge for many couples – only to lose the pregnancy, sometimes multiple times. And often, after all the testing, all the investigations, all the appointments, you’re told: “We don’t know why.”
Unexplained recurrent pregnancy loss is heartbreaking because it leaves you without answers, without direction, and without hope that things could be different next time.
But new research suggests there’s one investigation that’s being overlooked – and for some women, identifying and treating the culprit could change everything.
I’m talking about screening for mycoplasma and ureaplasma infections.
In this blog, I’ll break down what this new research shows, why I assess the microbiome in cases of RPL, and what testing and treatment options are available.
Why I Assess the Microbiome in Recurrent Pregnancy Loss
In my clinical practice, when I see women experiencing unexplained recurrent pregnancy loss, assessing the vaginal microbiome is part of my comprehensive investigation.
Why? Because research over recent years – including a recent study from Fertility and Sterility – demonstrates that certain microbial infections can significantly impact pregnancy outcomes.
The vaginal microbiome isn’t just important for general health. It’s critical for fertility, conception, implantation, and pregnancy maintenance.
When the microbiome is imbalanced or populated with pathogenic organisms, it can trigger inflammation, compromise the uterine environment, and make pregnancy loss more likely.
The Research: Mycoplasma and Ureaplasma in RPL
A recent study published in Fertility and Sterility investigated the prevalence of two specific bacterial species – mycoplasma and ureaplasma – in women experiencing recurrent pregnancy loss.
Study Design:
Subjects:
- 1,583 patients with recurrent pregnancy loss (RPL with no identifiable causes)
- 263 infertile controls (for comparison)
What they investigated: The prevalence of mycoplasma and ureaplasma infection in both groups, and whether treatment improved outcomes.
The Findings:
The results were striking:
RPL patients had significantly higher infection rates of mycoplasma and ureaplasma compared with the control group.
This wasn’t a coincidence – the difference was statistically significant, meaning it was real and measurable.
And here’s the critical finding:
Live birth rates were significantly higher in successfully treated individuals.
This means identifying and treating these infections directly improved pregnancy outcomes.
Women who had mycoplasma or ureaplasma detected and received appropriate treatment were significantly more likely to carry a pregnancy to term and deliver a live baby.
What Are Mycoplasma and Ureaplasma?
You might be wondering: what exactly are these organisms, and why do they matter?
What They Are:
Mycoplasma and ureaplasma are bacteria that naturally occur in the urogenital tract. They’re different from many other bacteria because they lack a cell wall (which makes them harder to detect and treat with standard antibiotics).
Both are considered sexually transmitted organisms, though not all presence is symptomatic or problematic.
Why They Matter for Pregnancy:
When present in the vaginal and uterine environments, these organisms can:
- Trigger chronic inflammation – The immune system recognises them as pathogens and mounts an inflammatory response. This inflammation can interfere with implantation and early pregnancy development.
- Directly damage the endometrium – Mycoplasma and ureaplasma can damage the cells lining the uterus, making it a less hospitable environment for an embryo.
- Impair placental development – These organisms can interfere with normal placental growth and function, leading to miscarriage.
- Cause subclinical infection – Many women have these organisms without obvious symptoms. They might not know they’re infected until experiencing pregnancy loss.
Not All RPL Is Caused by Infections – But Some Is
It’s important to understand that not all recurrent pregnancy loss is caused by mycoplasma or ureaplasma infections.
There are many potential causes of RPL, including:
- Chromosomal abnormalities – Genetic issues in the embryo
- Immunological factors – Immune system dysfunction that prevents pregnancy from progressing
- Hormonal imbalances – Insufficient progesterone, thyroid dysfunction, or other endocrine issues
- Anatomical issues – Uterine abnormalities, fibroids, or scarring
- Thrombophilia – Blood clotting disorders
- Other infections – Other pathogens like toxoplasma, cytomegalovirus (CMV), or others
- Unexplained factors – Sometimes despite thorough investigation, no cause is identified
But here’s what the research tells us: If you’ve experienced recurrent pregnancy loss and haven’t had microbiome assessment for mycoplasma and ureaplasma, you might be missing a treatable cause.
Why This Matters: Addressing Treatable Causes
One of the most important aspects of this research is that it represents a treatable cause of RPL.
For women dealing with chromosomal abnormalities or anatomical issues, the options are more limited. But for those with mycoplasma or ureaplasma infection, treatment is available – and it works.
The study showed that when these infections were identified and treated, live birth rates improved significantly.
This means that for some women who’ve experienced multiple miscarriages and felt hopeless, identification and treatment of these infections could be the breakthrough they’ve been waiting for.
Testing for Mycoplasma and Ureaplasma
If you’re experiencing unexplained recurrent pregnancy loss, testing for these organisms should be part of your comprehensive investigation.
How Testing Works:
Vaginal or endocervical swab: A sample is collected from the vaginal tract or cervix and sent for testing.
PCR (Polymerase Chain Reaction) testing: This is the gold standard for detecting mycoplasma and ureaplasma. PCR is highly sensitive and can detect the organism’s DNA even in very small amounts.
Timing: Testing is ideally done when you’re not actively bleeding (so the sample isn’t contaminated) and off any antibiotics that might affect results.
What to Expect:
Results typically come back within 1-2 weeks and show whether mycoplasma, ureaplasma, or both are present.
It’s a straightforward test – a simple swab – but the information it provides can be life-changing.
Treatment Options
If mycoplasma or ureaplasma is detected, treatment is available.
Antibiotic Treatment:
Azithromycin is typically the first-line antibiotic for mycoplasma and ureaplasma because these organisms are susceptible to it.
Treatment usually involves a specific protocol (such as a loading dose followed by maintenance doses) taken over several weeks.
Doxycycline is another option, though mycoplasma and ureaplasma can develop resistance to doxycycline more readily than to azithromycin.
Partner Treatment:
It’s important that sexual partners are also tested and treated if infected. Without treating both partners, reinfection is possible.
Post-Treatment Testing:
After treatment, follow-up testing (called test of cure) is typically done to confirm the infection has been cleared.
A Comprehensive Approach to RPL
While identifying and treating mycoplasma or ureaplasma is important, it’s just one piece of the RPL puzzle.
A comprehensive approach to recurrent pregnancy loss includes:
Thorough Investigation: Testing for all known causes – chromosomal, immunological, hormonal, anatomical, thrombophilic, microbiological, and more.
Microbiome Assessment: Including screening for mycoplasma, ureaplasma, and other pathogens that might affect pregnancy.
Immune System Support: Understanding and addressing any immune dysfunction that might be preventing pregnancy from progressing.
Hormonal Optimisation: Ensuring adequate progesterone, healthy thyroid function, and balanced reproductive hormones.
Nutritional Support: Ensuring adequate micronutrients that support healthy implantation and pregnancy maintenance – folate, B12, vitamin D, iron, selenium, and more.
Lifestyle and Stress Management: Addressing stress, sleep, nutrition, and other lifestyle factors that affect reproductive health.
Targeted Herbal Support: When appropriate, using herbs that support immune function, reduce inflammation, and strengthen the uterine environment.
Hope for the Future
If you’ve experienced recurrent pregnancy loss, know this: you are not alone, and there are answers.
The fact that this research exists – and that it demonstrates a treatable cause of RPL – is hopeful.
For some women, identifying and treating mycoplasma or ureaplasma infection is the missing piece that allows them to carry a pregnancy to term.
For others, the answer might be different – but there are many potential causes of RPL, and many of them are addressable with the right investigation and support.
When RPL Investigation Should Include Microbiome Testing
If you’re experiencing recurrent pregnancy loss – particularly unexplained RPL – microbiome assessment including screening for mycoplasma and ureaplasma should be part of your investigation.
This is especially true if:
- You’ve had multiple miscarriages with no identified cause
- Standard RPL testing hasn’t identified a clear cause
- You want to investigate all possible factors before trying again
- You’re looking for treatable causes that might improve outcomes
Ready to Investigate Your RPL?
If you’re experiencing unexplained recurrent pregnancy loss, comprehensive investigation is the first step toward understanding what’s happening and finding solutions.
Through detailed assessment, microbiome testing, hormone evaluation, immune function testing, and more, we can identify the factors contributing to your RPL and create a targeted plan to support a healthy pregnancy next time.
You deserve answers. You deserve hope. And most importantly, you deserve support that goes beyond “we don’t know why.”
Book your appointment here to start your comprehensive RPL investigation and begin your journey toward a successful pregnancy.
Georgia x
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