Does Wearing Pads Cause Urinary Tract Infections?

Standard disposable menstrual pads, used as directed, do not appear to cause urinary tract infections. A review of thirteen randomized trials found no clinically meaningful increase in genital microflora densities or UTI risk from wearing panty liners or ultra-thin pads. But the picture shifts when you look beyond clean, single-use disposable products. Reusable cloth pads, incontinence pads worn for extended periods, and pads used under poor sanitary conditions all show associations with higher UTI rates, and the reasons have less to do with the pad itself than with what happens around it.

What the Research Shows About Disposable Menstrual Pads

The most reassuring evidence comes from a review that looked specifically at whether panty liners and ultra-thin pads promote either yeast infections or UTIs. Across thirteen randomized prospective trials, researchers found no evidence that panty liner use promotes colonization of the urethra by the gut bacteria that typically cause UTIs, and no clinically significant adverse effects on genital skin or microbial communities.¹ The concern that pads trap heat and moisture in a way that encourages bacterial growth turned out, at least in controlled settings, to be unfounded. Skin temperature and surface moisture measurements showed no clinically meaningful changes from wearing panty liners.

A separate systematic review examining the relationship between menstrual products and reproductive and urogenital tract infections found a similarly reassuring result for single-use pads. In one of the highest-quality studies included, researchers compared women using disposable menstrual pads with women using no menstrual pads at all and found no difference in the odds of UTI symptoms.² The adjusted odds ratio was essentially 1.0, meaning using a disposable pad carried the same UTI risk as not using one. Lab-confirmed UTI comparisons trended higher but did not reach statistical significance.

A randomized trial in Rwanda gave adolescent girls access to disposable menstrual pads and tracked UTI rates by urine culture. There was no difference in rates of positive urine culture between girls who received the pads and those who did not.³ Together, these studies paint a consistent picture: a clean, single-use pad worn during menstruation does not meaningfully increase UTI risk.

Reusable Cloth Pads and the Hygiene Factor

The story changes when the pads are reusable. A large study of women in Odisha, India, compared those using reusable cloth pads with those using disposable pads and found that cloth users had roughly double the odds of having a lab-indicated UTI and nearly three times the odds of being diagnosed with at least one urogenital infection (either bacterial vaginosis or a UTI).⁴ A separate analysis of the same dataset confirmed that the most commonly cultured urinary pathogen was E. coli, the bacterium responsible for the majority of UTIs worldwide, alongside Enterococcus, Staphylococcus aureus, and Klebsiella species.⁵

The systematic review discussed earlier also flagged this disparity: among its highest-quality studies, one found that women using cloth had more than double the odds of urogenital symptoms compared to disposable pad users.² The likely culprit is not cloth itself as a material, but how cloth pads are laundered, dried, and stored. In settings without reliable access to clean water, soap, or sunlight for drying, reusable pads can harbor bacteria between uses. Education level and wealth both showed up as independent predictors of UTI risk in the Odisha study, suggesting that the problem tracks closely with the resources needed for proper sanitation rather than with the fabric touching your skin.

A cross-sectional study of women in refugee camps in Jordan found that difficulty obtaining menstrual products, and therefore reusing them, roughly doubled the odds of a urinary or reproductive tract infection diagnosis.⁶ Women who reported difficulty getting menstrual products every month also faced significantly higher odds of infection. Again, the issue was not pad use per se but the inability to use pads under safe, hygienic conditions. When access to clean products was adequate, the elevated risk disappeared.

Incontinence Pads Are a Different Category

If you have been searching this question because you or someone you care for wears incontinence pads, the evidence looks different from menstrual pad research. Incontinence pads are often worn continuously, sometimes for long stretches, and they sit against skin that is regularly exposed to urine. A study of nursing home residents found that those who used absorbent incontinence pads were far more likely to develop UTIs than those who did not, with infection rates of roughly 41 percent versus 11 percent.⁷

A more recent retrospective cohort study reinforced the connection. Full-time users of absorbent incontinence pads had double the odds of being admitted to the hospital with a UTI. Patients who became pad users during hospitalization faced even steeper risk, with more than four times the odds of developing a hospital-acquired UTI compared to non-users.⁸

These numbers are striking, but they come with an important caveat. People who wear incontinence pads already have urinary incontinence, which is itself a well-established risk factor for UTIs. A wet pad pressed against the perineum creates a warm, moist environment that bacteria thrive in, but it is hard to separate the effect of the pad from the effect of the leaking urine the pad is there to absorb. The pad may worsen the situation by keeping the skin damp, but it is not the root cause. Researchers in the hospitalization study were careful to note that frailty and underlying illness traveled alongside pad use, making it difficult to isolate the pad as an independent driver.

Why Pads Get Blamed for UTIs

It is easy to understand the intuition. Pads sit right against the perineum, close to both the vaginal and urethral openings. They collect blood, urine, or discharge depending on the type. And UTIs are caused by bacteria that normally live in the gut migrating to the urethra. A pad seems like it could act as a bridge, holding those bacteria close to where they can cause harm.

There is a grain of logic to that, but the evidence suggests that under normal conditions the pad material does not meaningfully boost bacterial colonization at the urethral opening. What does matter is prolonged contact with moisture and contaminants. A menstrual pad changed every few hours is in a fundamentally different situation from an incontinence pad worn all day or a cloth pad washed in dirty water and reused without proper drying. The bacteria that cause UTIs are already present on the skin of the vulva and perineum at all times. Under normal hygiene conditions, a fresh pad does not amplify their numbers enough to overwhelm the body’s defenses.

Menstruation itself may also confuse the picture. During your period, the vaginal environment shifts. Blood raises pH and temporarily changes the microbial balance in ways that can make the area feel different, sometimes itchier or more irritated. Some women develop mild UTI-like symptoms during menstruation that have nothing to do with their pad and everything to do with hormonal and pH shifts. When those symptoms coincide with pad use, it is natural to blame the pad.

How Menstruation Itself Shifts the Microbial Landscape

A small but detailed longitudinal study tracked the vaginal microbial communities of women across multiple menstrual cycles, comparing periods when they used pads with periods when they used tampons. At mid-cycle, all participants had vaginal microbiomes dominated by Lactobacillus, the protective bacteria that help maintain a healthy environment. During menstruation, community diversity shifted in patterns that were highly individual. In three of the seven women studied, the community diversity during pad use was significantly different from at least one tampon cycle.⁹

That finding is interesting but hard to generalize from seven women. What it mainly tells us is that menstruation itself is the big disruptor of vaginal microbial balance, not the choice of product. The type of product may nudge things in slightly different directions for different women, but individual biology appears to matter far more than whether you choose a pad or a tampon. One study of hemp-based sanitary pads found that women without existing vaginal infections who used the hemp pads had lower rates of abnormal vaginal cleanliness and suspected vaginitis compared to controls using conventional pads, suggesting that pad material composition might matter at the margins.¹⁰ Among women who already had suspected infections, though, no significant difference emerged between pad types. This fits the broader pattern: pad choice is a minor variable compared to your existing vaginal health and hygiene habits.

Scented Pads and Contact Irritation

While standard unscented pads appear safe for the urinary tract, scented products introduce a different concern. A systematic review on sanitary pads and female health identified fragrances in scented pads and a preservative called MDBGN found in some pad adhesives as causative agents of contact dermatitis.¹¹ Contact dermatitis is not a UTI, but it can produce redness, itching, and burning in the vulvar area that feels confusingly similar to a urinary infection. If you have been getting recurrent irritation that you associate with pad use, the fragrance or adhesive chemicals may be the issue rather than bacteria.

The practical takeaway here is straightforward: unscented, fragrance-free pads eliminate this variable entirely. If you have sensitive skin or a history of vulvar irritation, scented products are worth avoiding. The irritation they cause can also compromise the skin barrier, which in theory could make it easier for bacteria to gain a foothold, though this specific chain of events has not been directly studied in a way that links scented pads to UTIs.

Practical Ways to Minimize Risk

Even though disposable pads are not a demonstrated cause of UTIs, a few common-sense habits reduce the already-low risk further:

Change regularly: Swapping out a menstrual pad every three to four hours prevents prolonged moisture contact with the skin. For incontinence pads, change promptly after significant leakage rather than waiting for the pad to reach capacity.
Choose unscented products: Fragrances add no benefit and can cause irritation that mimics or worsens infection symptoms.
Wipe front to back: This has nothing to do with the pad, but it is the single most effective mechanical step you can take to keep gut bacteria away from the urethra.
Stay hydrated: A small randomized crossover trial found that increasing water intake during menstruation led to more frequent urination and less concentrated urine, both of which help flush potential pathogens from the urinary tract.¹² The study was too small to definitively show that this prevented UTIs, but it aligns with larger hydration research outside of menstruation.
If reusing cloth pads, wash thoroughly: Hot water, soap, and complete drying in sunlight before reuse are the practices associated with lower infection rates in the studies from low-resource settings.

When the Problem Is Not Your Pad

If you keep getting UTIs and you suspect your pads, it is worth considering whether something else is going on. Recurrent UTIs in menstruating women have well-established risk factors that have nothing to do with menstrual products: sexual activity, spermicide use, a history of childhood UTIs, and individual anatomy all play larger roles. Postmenopausal women face additional risk from declining estrogen levels, which thin the vaginal and urethral tissues and reduce protective Lactobacillus populations.

The Odisha study found that education level was a stronger predictor of UTI than the type of menstrual product used, with women who had only primary schooling facing roughly three times the odds of lab-confirmed UTI compared to those with secondary education or higher.⁴ Education is a proxy for a bundle of things: access to clean water, knowledge of hygiene practices, healthcare access, and overall health. The pad was one small variable in a much larger equation.

For people wearing incontinence pads who experience repeated UTIs, the conversation with a healthcare provider should focus on the underlying incontinence, not just the pad. Pelvic floor therapy, medication adjustments, and timed voiding schedules can reduce urine leakage and therefore reduce the time the perineal skin spends in contact with urine, whether or not a pad is involved. Treating the incontinence treats the UTI risk far more effectively than switching pad brands.

Pads Versus Tampons and Cups

People sometimes wonder whether switching to a tampon or menstrual cup would lower their UTI risk. There is no strong evidence that any one menstrual product is meaningfully safer than the others for urinary health, as long as it is used correctly. Tampons introduce their own considerations, including a small risk of toxic shock syndrome and the potential for vaginal dryness in lighter-flow situations. Menstrual cups are reusable, but they need to be cleaned between uses, not unlike the cloth pad hygiene issue.

The vaginal microbiome study mentioned earlier found that shifts in microbial diversity during menstruation were individualized and not consistently worse with one product type over another.⁹ Your body’s response to menstruation dominates whatever difference the product makes. If you are comfortable with pads and practicing reasonable hygiene, there is no UTI-specific reason to switch to another product. If a particular product consistently seems to coincide with symptoms, it is worth trying a different one, but the most likely explanation for recurrent UTIs that track with your period is the menstrual cycle itself altering your local environment, not the product you choose to manage it.

1
European Journal of Obstetrics & Gynecology and Reproductive Biology. Do panty liners promote vulvovaginal candidiasis or urinary tract infections? A review of the scientific evidence
2
PLOS ONE. Assessing the relationship between menstrual products and reproductive and urogenital tract infections (RUTIs): A systematic review evaluating the evidence and recommendations for future research – Section: Results
3
PubMed. The impact of menstrual hygiene management on adolescent health: The effect of Go! pads on rate of urinary tract infection in adolescent females in Kibogora, Rwanda – Section: RESULTS
4
PLoS ONE. Menstrual Hygiene Practices, WASH Access and the Risk of Urogenital Infection in Women from Odisha, India – Section: Results
5
PLoS ONE. Menstrual Hygiene Practices, WASH Access and the Risk of Urogenital Infection in Women from Odisha, India – Section: Results
6
PubMed Central. Urinary and reproductive tract infection symptoms and menstrual hygiene practices in refugee camps in Jordan: A cross-sectional study – Section: Results
7
PubMed. Pad per day usage, urinary incontinence and urinary tract infections in nursing home residents – Section: RESULTS
8
International Journal of Nursing Studies Advances. Absorbent incontinence pad use and the association with urinary tract infection and frailty: A retrospective cohort study – Section: Results
9
PubMed. Effects of tampons and menses on the composition and diversity of vaginal microbial communities over time – Section: Results
10
PubMed Central. Effects of Hemp Sanitary Pads on the Vaginal Microecology – Section: Abstract
11
The Ewha Medical Journal. Systematic Review on Sanitary Pads and Female Health – Section: Results
12
PubMed Central. Effect of increased water intake on uropathogenic bacterial activity of underhydrated menstruating young adult women: A randomized crossover trial – Section: Results