The vaginal microbiome is the community of microorganisms, including bacteria and yeast, that live in the vagina. A healthy microbiome is predominantly made up of beneficial bacteria called Lactobacilli. These bacteria produce lactic acid, which keeps the vagina slightly acidic, protecting it from infections and maintaining overall health.
Why Does It Matter?
A balanced vaginal microbiome is your body’s natural defense system. It helps to:- Prevent infections like Bacterial Vaginosis (BV) and thrush.
- Protect against Sexually Transmitted Infections (STIs).
- Maintain a healthy pH balance.
- Prevent unpleasant odour and discomfort.
What Are the Signs of an Unbalanced Microbiome (Dysbiosis)?
An imbalance, where harmful bacteria outnumber the beneficial Lactobacilli, can lead to:- Unusual discharge (thin, grey, white, or green).
- A strong, “fishy” odour.
- Itching, burning, or irritation around the vagina.
- Pain during sex or urination.
What Causes an Imbalance?
- Antibiotics: When taken for other conditions, antibiotics can kill both beneficial and harmful bacteria in the vaginal flora.
- Hormonal Changes: Fluctuations in hormone levels during periods, pregnancy, and menopause can affect the vaginal microbiome.
- Spermicides and Harsh Soaps: These can damage vaginal epithelial cells and beneficial bacteria.
- Unprotected Sex: Semen is alkaline and can alter vaginal pH, disrupting the natural vaginal flora.
- Douching: This can wash away beneficial Lactobacilli and the protective mucus layer, disrupting the natural balance.
- Stress and Poor Diet: Stress can trigger hormonal changes, while foods high in sugar and refined carbohydrates may encourage the growth of harmful bacteria.
Testing Beyond Basic Swabs and Smears
Traditional tests often only look for a few specific pathogens. Next-Generation Sequencing (NGS) technology provides a revolutionary way to assess vaginal health.- What is NGS? It is an advanced DNA testing method that identifies all bacteria and fungi present in your sample—not just a limited number of organisms. It provides a comprehensive map of your vaginal microbiome.
- How It Works: A simple and painless vaginal swab (often self-collected) is sent to a laboratory, where NGS technology analyses the entire microbial community, showing the proportions of beneficial bacteria, harmful bacteria, and other microorganisms.
- Why It’s Better: It delivers a far more detailed and accurate picture than standard tests, enabling highly personalised treatment plans tailored to your unique microbiome.
Management & Treatment
- Probiotics: Specific probiotic strains such as Lactobacillus crispatus, Lactobacillus rhamnosus, and Lactobacillus reuteri can help restore healthy bacterial balance and support vaginal wellness.
- Prebiotics: Foods such as onions, garlic, whole grains, fruits, and vegetables help support beneficial bacteria and maintain an acidic vaginal environment that discourages harmful bacteria and yeast.
- Personalised Care: Based on NGS test results, your gynaecologist can recommend targeted treatments, including specific antibiotics when required or tailored probiotic therapies, rather than a one-size-fits-all approach.
- Avoid Irritants: Avoid douches, scented sprays, and harsh soaps to protect vaginal epithelial cells and preserve beneficial bacteria.
eGynaecologist Advice
- Your vaginal microbiome is a key indicator of your gynaecological health. It deserves as much attention as your gut health.
- Sometimes, dysbiosis can be “silent” with no noticeable symptoms but still pose risks. Advanced testing such as Next-Generation Sequencing (NGS) can reveal hidden imbalances that traditional tests might miss.
- If you suffer from recurrent infections such as thrush or bacterial vaginosis (BV), or experience vaginal dryness or irritation, ask your gynaecologist about comprehensive microbiome testing.
- You should discuss your vaginal microbiome with your gynaecologist when planning a pregnancy, as it can influence fertility and pregnancy outcomes.
Frequently Asked Questions
I don't have symptoms. Should I get tested?
Yes! A “silent” imbalance can still increase your risk of STIs or other complications. Testing of vaginal microbiome provides a baseline of your vaginal health.
How is this different from a test at my GP or hospital?
A standard test looks for common infections like thrush or BV. An NGS test for microbiome gives a complete, detailed census of every microbe present, offering a deeper level of insight of vaginal health
Can my partner affect my microbiome?
Yes. Semen, saliva, and the transfer of bacteria during sex can alter your vaginal pH and bacterial balance. Using condoms can help maintain stability.
Does vaginal microbiome affect the health of my baby during pregnancy?
Yes! Newborn’s gut microbiome is most similar to the vaginal microbiome of woman giving birth and plays key role in the establishment of baby’s immunity and risk of disease for the newborn in the future.
Can I test my microbiome without seeing a doctor?
Yes. Many services often allow you to order a test kit directly online without a prescription, however, your gynaecologist can help you choose the right one for you and help formulate management plan for healthy vaginal flora.
