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2 Causes of Vaginal Dryness

Vaginal dryness can make sex painful and lead to other problems, like tears and infections. The vaginal dryness women often experience after menopause has an underlying cause that researchers haven’t completely figured out yet. Many things might cause it, such as dehydration and aging, as well as emotional issues that cause a lack of interest in sex. Whatever its cause, there is no shortage of options for dry vagina relief to explore, so you can find the one that works best for you.

Anyone with a vagina can experience dryness, but it’s more common in those who have gone through menopause. Research shows it affects roughly 15 percent of women before menopause and 40 to 57 percent of post-menopausal women.[1]And yet, most women with vaginal dryness do not talk about it with their healthcare provider, either chalking it up to a natural part of the aging process or avoiding it as an uncomfortable topic.

The first step in treating vaginal dryness is figuring out what’s causing it. A number of conditions can lead to a lack of vaginal lubrication.

Low Estrogen

Estrogen helps maintain normal blood flow, vaginal tissue health, and moisture in the vagina, according to the American College of Obstetricians and Gynecologists (ACOG).[2] “You can have low estrogen when you are breastfeeding, postpartum, and you can have diminished estrogen with some types of birth control and then certainly with menopause,” says Susan Reed, MD, MPH, a professor emeritus of obstetrics and gynecology at the University of Washington in Seattle. Cancer treatments such as chemotherapy and radiation to the pelvis can also lead to low estrogen and decreased vaginal lubrication.[3]Dehydration

The cells in the vagina need to have enough water in them to function properly. “If you’ve been exercising like crazy and haven’t been drinking enough water, you’ll be dryer,” Dr. Reed says. Some soaps, dyes, perfumes, lubricants, and scented products have ingredients in them that draw moisture out of your cells. And some medications like antihistamines can also be dehydrating.


The chemicals in soaps, hygiene products, dyes, and perfumes can also irritate your vaginal cells and cause inflammation. “Hygiene products can have ingredients that are irritating or are harmful to genital tissues,” says Reed. “They are not recommended.”

Infections can have a similar effect. “Yeast or candida often presents as a burning or feels like sandpaper,” says Reed. “This sensation can feel like vaginal dryness due to menopause.”

Inflammation blocks two critical types of glands that are just at the outside of the vagina, she notes. “The glands produce fluid when you’re aroused. If these tissues are inflamed, they don’t function well, and you won’t get good lubrication.”


The process of getting older is complicated, and can affect the whole body as well as specific tissues and organs. One area of concern is what happens to the vagina during menopause, which can significantly impact a woman’s sexual health. “Aging vaginal tissues are by their very nature dryer than the premenopausal state,” says Reed. She says younger people have better blood flow, which is needed to create the moisture that comes through vaginal tissues.

Research from 2021 showed that, as women age, the vagina goes through various changes, including a lack of estrogen, shifts in the microorganisms living in the vagina, and alterations in the genes. During menopause, a decrease in the number of beneficial bacteria and an increase in harmful bacteria can unfold, as well as a drop in estrogen. The drop in estrogen leads to less permeability, blood flow, and elastin, causing dryness. While scientists understand some of these changes, the details at the molecular level are not entirely clear. They are still working to fully understand how our DNA, hormonal shifts, and the vaginal microbiome are interconnected.[4]Aging is even separate from the estrogen, explains Reed. “Those [two things] are happening in parallel. Aging will cause changes in the sexual response that is not necessarily hormone-dependent,” she says. “The vascular supply and the enervation to the genitals ages and this is independent of reproductive hormones — these changes are due to aging. So, you can still have problems even when you [take] some estrogen, although estrogen can help increase blood flow.”

The Vaginal Microbiome

Experts suspect some kind of link between the vaginal microbiome and vaginal dryness and other post-menopausal vaginal symptoms, but they have yet to confirm this association clearly.[5] According to a 2024 review by Reed and colleagues, early studies found an association between microbiomes with lower levels of Lactobacillus, a bacteria researchers think is helpful to vaginal health after menopause, and more dryness symptoms.[6]More recently, Reed and her collaborators are leading a set of five randomized clinical trials and three ancillary studies investigating post-menopausal symptoms, called Menopause Strategies: Finding Lasting Answers for Symptoms and Health Trials or MsFLASH. Throughout MsFLASH, the team has tested nine interventions in over 1,300 women and collected nearly 16,000 samples. MsFLASH researchers theorize that since Lactobacillus produces lactic acid, it might help guard against pathogens in the vagina, and help prevent dryness-related issues by fighting off infections.[7]But so far, Reed says, MsFLASH has yet to establish a clear relationship between what’s in someone’s vaginal microbiome and their vulvovaginal symptoms, including dryness. Hormone therapy likely helps increase the beneficial bacteria, Lactobacillus, which is most common in a healthy premenopausal vagina, she notes. “What is still unclear is, do these changes track with vaginal symptoms? Our research did not show that it did. More research is needed.”

Mental and Emotional Issues Could Play a Role

According to ACOG, stress and anxiety can have an impact on your sex life. So can problems between you and your partner.[8] “Sexual interest can be driven by sexual pleasure,” says Reed. “If the experience is not as pleasurable due to less engorgement and slow response and fewer orgasms, the interest falls [over time].”The National Institute on Aging also says that, for older adults, compounding medical conditions, such as chronic pain, incontinence, arthritis and heart problems, can alter their attitude about intimacy and sex.[9]How to Prevent and Treat Vaginal DrynessTreatment for vaginal dryness depends on the cause. In general, Reed says, “Drink more water and avoid infections or anything that irritates the tissues.” But other helpful ways to address it include:

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