How Vitamin D Levels Impact Vaginal Health

Written by: Denise John, PhD


Updated on: May 26, 2022


Photo courtesy of Michael Blank/The Licensing Project

Your vagina has its very own microbiome. When it’s balanced, it is home to a diverse population of microbes that includes many Lactobacillus species, like L. crispatus, L. gasseri, L. iners, and L. jensenii. These bacteria produce lactic acid, creating the optimal pH for the vagina—a moderately acidic range of 3.8 to 4.5. This pH prevents the overgrowth of harmful microbes that can lead to various infections.

An imbalance of Lactobacillus species is largely associated with an imbalance in vaginal and urinary tract health. What’s often overlooked: Research shows that vitamin D may help balance the vaginal microbiome. Higher vitamin D levels may help maintain a greater abundance of Lactobacillus compared to lower levels, creating a healthy vaginal pH.


Vitamin D is one of those nutrients that are hard to get enough of, especially if you’re protecting your skin from the sun (which is recommended). Spending lots of time outdoors and supplementing can help.

For a generous amount of vitamin D, Hum Nutrition offers a high-potency plant-based source—2,000 IU of vitamin D per capsule. And for those looking for vitamin D minus the capsule, three sprays of The Nue Co. Vitamin D Spray deliver 3,000 IU of vitamin D.*

  1. Hum Nutrition Here Comes the Sun High-Potency Vitamin D3 goop, $12
    Hum Nutrition Here Comes the Sun High-Potency Vitamin D3 goop, $12
  2. The Nue Co. Vitamin D Spray goop, $25
    The Nue Co. Vitamin D Spray goop, $25

Vaginal Cells, Vitamin D, and Lubrication

Similar to the tissue in our mouths, the vaginal wall is made of muscle covered in a mucus membrane, which contains epithelial cells. Vaginal epithelial cells are like a home to vaginal microbiota—they provide protection, nutritional support, and synergistic benefits. And they contribute to vaginal lubrication.

As these cells shed and replenish themselves, they help maintain a healthy vaginal environment. But when they’re not properly restored, it can lead to a vaginal imbalance and vaginal dryness. Research shows that vitamin D may help vaginal cells regenerate and improve lubrication. Vitamin D may rapidly increase the number of vaginal cells, potentially preventing or limiting vaginal atrophy, which is particularly prevalent in women during menopause and after.

Clean Lubes and Sex Serums

If you’re looking for extra lubrication, lubes can make sexual play more comfortable and pleasurable. And since the vagina is highly permeable, ideally you want to use lubes and oils made without parabens, phthalates, or other endocrine disruptors. All the lubes and oils here meet our clean, safe ingredient standards.

Water- and aloe-based lubricants and sex serums pair well with condoms (latex and polyisoprene) and sex toys made of body-safe silicone.

  1. The Serum

    Made with aloe, chamomile, ginseng, horny goat weed, and hempseed extracts, Whet is a light, water-based sex serum infused with a combination of ingredients that give slip without the stickiness. You need just a few pumps for however you want to play.

    Personal Fav WHET PLANT-BASED SEX SERUM goop $24
    Personal Fav WHET PLANT-BASED SEX SERUM goop, $24
  2. The Soothing Lube

    This aloe-based lube contains vitamin E and extracts of hibiscus, green tea, and sunflower seed. It’s formulated to match the feeling of the vagina’s natural lubrication.

    Sliquid Organics Natural 4.2 oz goop, $15
    Sliquid Organics Natural 4.2 oz goop, $15
  3. The Touchless Warmer

    The Pulse Warmer gently heats your lube for added sensual pleasure. It’s designed to pair with Pulse Pods, like the H2Oh! Personal Lubricant and Spoil Me Massage Oil Pulse Pods. Pop one of the pods into the warmer and it will touchlessly deliver a dollop of warm lubricant. No slippery lube bottles to fumble around with.

    Pulse Pulse Warmer goop, $199
    Pulse Pulse Warmer goop, $199

This article is for informational purposes only, even if and regardless of whether it features the advice of physicians and medical practitioners. This article is not, nor is it intended to be, a substitute for professional medical advice, diagnosis, or treatment and should never be relied upon for specific medical advice. The views expressed in this article are the views of the expert and do not necessarily represent the views of goop.

*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.