Your Vaginal Microbiome: Striking A Balance

Your vaginal microbiome might not get much attention, but it plays a huge role in your overall health. This delicate ecosystem of bacteria keeps your vagina healthy and protected from infections – but it’s all about striking a balance.

your-vaginal-microbiome-striking-a-balance

A rich text element can be used with static or dynamic content. For static content, just drop it into any page and begin editing. For dynamic content, add a rich text field to any collection and then connect a rich text element to that field in the settings panel. Voila!

How to customize formatting for each rich text

Headings, paragraphs, blockquotes, figures, images, and figure captions can all be styled after a class is added to the rich text element using the "When inside of" nested selector system.

Your Vaginal Microbiome: Striking A Balance

Your vaginal microbiome might not get much attention, but it plays a huge role in your overall health. This delicate ecosystem of bacteria keeps your vagina healthy and protected from infections – but it’s all about striking a balance.

Your vaginal microbiome might not get much attention, but it plays a huge role in your overall health. This delicate ecosystem of bacteria keeps your vagina healthy and protected from infections – but it’s all about striking a balance.

In this article, we’ll explain all you need to know about the vaginal microbiome: the key bacteria involved, why lactobacilli are the real heroes, how to tell if your microbiome is healthy, and exactly why that balance is so important.

What Is the Vaginal Microbiome?

Your vaginal microbiome is a community made up of trillions of bacteria that live inside your vagina. While the word “bacteria” might sound scary, these microorganisms are both normal and essential. 

A healthy vaginal microbiome works in harmony with your body, maintaining a careful balance between ‘helpful’ and ‘harmful’ bacteria, to keep infections at bay. But it’s not a static system, your microbiome is super sensitive to changes. Whether it’s hormonal fluctuations, lifestyle habits, or external factors: your vaginal microbiome is always adapting to try and protect your health. 

What Bacteria Make Up the Vaginal Microbiome?

Recent research has revealed that the vaginal microbiome is far more complex than we once thought. Modern technology can now identify multiple microbial species, even to their strain level. Some of the most common types include:

  • Lactobacilli: The key healthy bacteria that produce lactic acid, keeping the vaginal environment slightly acidic (pH 3.8–4.5).

  • Gardnerella: Part of a healthy microbiome but can cause bacterial vaginosis (BV) when it overgrows.

  • Candida: A type of natural yeast. Overgrowth of Candida albicans (present in about 20-30% of healthy vaginas) is what causes yeast infections, also known as thrush or vulvovaginal candidosis (VVC).

  • Streptococcus, Anaerococcus, Peptoniphilus, Corynebacterium: All found in healthy vaginas but can cause issues when they start to outnumber the good lactobacilli.

There’s still plenty of work to do when it comes to understanding the vaginal microbiome, but scientists have now characterized the vaginal microbiome by different “community state types” (CSTs) or  “vaginotypes” based on the type of bacteria that dominates the vaginal microbiome:

  • Types 1, 2, 3, and 5: Dominated by lactobacilli, linked to a healthy environment.

  • Type 4: More diverse, with fewer or no lactobacilli, often associated with a higher risk of acquiring sexually transmitted infections (STIs).

Lactobacilli: The Key to a Healthy Vaginal Microbiome

Lactobacilli are the unsung heroes of vaginal health. In a healthy state, they constitute up to 80% of the vaginal microbiome. These friendly bacteria act like security guards, working hard to maintain balance and protect against infections

Here’s how they do it:

  1. Produce lactic acid: This keeps the vaginal environment slightly acidic (with a pH of 3.8-4.5), making it more difficult for harmful bacteria to thrive.

  2. Compete for nutrients: Lactobacilli outcompetes harmful microbes, essentially starving them out.

  3. Release bacteriocins: These proteins act like tiny weapons, killing or inhibiting harmful bacteria and fungi.

  4. Prevent adhesion: Lactobacilli release components that stop harmful microbes from sticking to the vaginal wall.

Without enough lactobacilli, the vaginal microbiome becomes unbalanced, making infections like BV, thrush, and STIs more likely.

What Impacts the Vaginal Microbiome?

The bacteria in your vaginal microbiome are sensitive to change. Lots of different factors can influence your bacterial balance, including:

  • Hormonal changes: Your menstrual cycle, pregnancy, menopause, or hormonal contraception.

  • Sexual activity: Without barrier contraception like condoms, semen’s alkaline pH can promote the growth of unwanted bacteria, while also introducing symptom-causing microbes to the vagina.

  • Antibiotics: These don’t discriminate, along with treating the target infection, they also kill the good bacteria. That’s why women often get a thrush infection after using antibiotics since good lactobacilli has been killed and the natural balance of the microbiome has been disrupted. 

  • Hygiene habits: Douching or using soap can upset your natural pH, again disrupting your microbiome. Experts recommend washing with only water and to avoid using any products on the vulva or vagina.

  • Diet and stress: Both can indirectly affect the balance of bacteria in your body.

How Do I Know If My Microbiome Is Balanced?

When your vaginal microbiome is balanced and healthy, you probably won’t notice much at all – it’s business as usual! 

Signs of a balanced microbiome include:

  • A mild, naturally musky scent.

  • Normal discharge (clear, creamy or white).

  • No itching, burning, or irritation.

The biggest sign of an imbalanced microbiome is that you’re experiencing symptoms of vaginal discomfort such as abnormal/excessive discharge, foul smell, itching, burning sensation or pain. This means your microbiome is unable to fight off the symptom-causing microbes. 

Dysbiosis: When Things Get Thrown Off Balance

When harmful bacteria take over the microbiome, reducing the number of good lactobacilli, it enters a state called “Dysbiosis, aka imbalance. 

This can lead to infections such as:

  • Bacterial vaginosis (BV): Linked to a lack of lactobacilli and an overgrowth of Gardnerella. Symptoms often include a fishy odour,  thin, grey discharge and itching.

  • Yeast infections: Caused by an overgrowth of Candida, leading to itching, burning, and thick, white discharge.

  • Increased risk of STIs: An imbalanced microbiome can make the vagina more vulnerable to STIs.

If you suspect you might have an imbalance, it’s important to consult a healthcare professional for support. 

Embracing Your Balance

Your vaginal microbiome is a dynamic system that plays a crucial role in your overall health. By understanding how it works and what impacts it, you can take steps to support this important ecosystem.

Remember: a healthy vaginal microbiome isn’t just about avoiding infections. It’s about creating a resilient, protective environment that supports your health. 

Sources

  1. The Vaginal Microbiome: I. Research Development, Lexicon, Defining “Normal” and the Dynamics Throughout Women's Lives
  2. Towards a deeper understanding of the vaginal microbiota 
  3. Guideline: Vulvovaginal candidosis
  4. Vaginotypes of the human vaginal microbiome
  5. Protective Mechanisms of Vaginal Lactobacilli against Sexually Transmitted Viral Infections
  6. Vaginal microbiome: normalcy vs dysbiosis