If there's one topic that gets whispered about more than it gets explained, it's yeast infections. Women deal with them constantly, and yet most of us are working with a patchwork of half-truths, old wives' tales, and one awkward health class from eighth grade.
That ends now. Here are 10 things I want every woman to know about yeast.
1. Yeast already lives in your vagina. That's normal.
This is the one that surprises people most. Candida (the type of yeast responsible for vaginal yeast infections) is a normal part of your vaginal ecosystem. It's there right now. In small amounts, it coexists with the bacteria in your vagina without causing any problems at all.
A yeast infection doesn't mean yeast showed up uninvited. It means something shifted and allowed the yeast that was already there to overgrow. That's a really important distinction because it changes how you think about prevention.
2. Your vaginal microbiome is the bouncer.
Your vagina is home to a community of microorganisms: your vaginal microbiome. When it's balanced, beneficial bacteria (especially Lactobacillus species) keep yeast in check by maintaining an acidic environment that makes it hard for Candida to overgrow.
When that balance gets disrupted, the yeast that was quietly minding its own business suddenly has room to multiply. Understanding your microbiome is potentially the single most important thing you can do for your vaginal health, yeast infections included.
3. Antibiotics are one of the most common triggers.
Here's the irony. Antibiotics are designed to kill bacteria but they don't discriminate. They can wipe out the beneficial Lactobacillus bacteria in your vagina right alongside whatever infection they were prescribed for. With fewer good bacteria keeping things in check, yeast has an open invitation to overgrow.
This doesn't mean you should skip antibiotics when you need them. It means it's worth being aware of what's happening in your vagina while you're on them.
4. Hormones play a bigger role than you think.
Estrogen fluctuations can change the environment inside your vagina — affecting pH, moisture levels, and the composition of your microbiome. That's why yeast infections are more common during pregnancy, around your period, and during hormonal transitions like perimenopause.
If you notice a pattern (like yeast infections that show up at the same point in your cycle) that's not a coincidence. It's biology.
5. It's not an STI.
Yeast infections are not sexually transmitted. You can get one without being sexually active at all. While sex can sometimes trigger one (friction, new products, changes in pH), a yeast infection is a fungal overgrowth.
This matters because the shame and secrecy around yeast infections often comes from the assumption that they're somehow related to sexual behavior. They're not.
6. Not every itch is a yeast infection.
This is a big one. Itching, burning, and unusual discharge can be symptoms of a yeast infection, but they can also be signs of bacterial vaginosis (BV), a urinary tract infection, or other conditions that look and feel similar but require different approaches.
Studies suggest that a significant number of women who self-diagnose a yeast infection are actually dealing with something else. If you're not sure what's going on, getting a proper medical evaluation matters more than quick-fixes and guesswork.
7. Sugar doesn't directly "cause" yeast infections, but the relationship is real.
You've probably heard that eating sugar feeds yeast. The reality is more nuanced. Dietary sugar alone isn't going to cause a yeast infection in a healthy person. But consistently elevated blood sugar levels (whether from unmanaged diabetes or other factors) can create an environment where Candida is more likely to thrive.
The connection between blood sugar and vaginal yeast has been studied, and it's worth being aware of, especially if you're someone who deals with recurrent infections.
8. What you put in and on your vagina matters.
Scented soaps, fragranced washes, douches, certain lubricants can all disrupt the delicate balance of your vaginal microbiome. And a disrupted microbiome is one of the fastest routes to yeast overgrowth.
Your vagina is self-cleaning. It doesn't need a product to make it smell like lavender. What it needs is for its ecosystem to be left intact. When you do use products in or around your vagina, choosing ones that are free from unnecessary fragrances and irritants is important.
9. Recurrent yeast infections are common and they're not your “fault.”
An estimated 40-50% of women who get a yeast infection will experience a recurrence in their lifetime. Some women deal with them multiple times a year. If that's you, it's not because you're doing something wrong.
Recurrent yeast infections can be influenced by your microbiome composition, your hormonal profile, medications, underlying health conditions, and factors that are largely outside your control. If you're stuck in a cycle, it's important to talk to your doctor and consider looking at the bigger picture, not to blame yourself.
10. Prevention starts with understanding your own body.
There's no magic pill or perfect diet that guarantees you'll never get a yeast infection. But there's a lot you can do by simply paying attention to your body and understanding how it works.
Know what's normal for you: your discharge, your cycle, your patterns. Be intentional about the products you use. Understand that your vaginal microbiome is an ecosystem that needs to be supported, not scrubbed into submission. And when something feels off, take it seriously instead of pushing through.
That's not over-the-top. It's the bare minimum your vagina deserves.
The real takeaway
Yeast isn't the villain. An imbalanced microbiome is. And the more you understand about your own vaginal ecosystem, the better equipped you are to keep it thriving.
We weren't taught any of this growing up. But now you know. Pass it on.
-Dr. Nicole Kerner
This content is for informational and educational purposes only and is not intended as medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with any questions about your health or before starting any new product or wellness routine.
