Does Peeing After Sex Really Prevent a UTI? Why Doctors Say It’s Okay if You Can’t Go
Plus see three tips to reduce your risk of bladder infections
Key Takeaways
- Forgetting to pee after sex doesn't automatically mean you'll develop a UTI.
- Evidence that peeing right after sex prevents UTIs is still limited.
- Staying hydrated and supporting vaginal health can help lower UTI risk.
After a session between the sheets with your partner, you’re ready to go on with your normal routine. Perhaps that means cuddling, hopping into the kitchen for a snack or taking an extra-long “everything shower.” But afterward, your stomach may drop to your knees when you realize you forgot to pee. Many of us have been told that peeing after sex is key for preventing a urinary tract infection (UTI). But is it really necessary, and what happens if you forget to (or can’t) pee after sex?
What is a UTI?
“A urinary tract infection happens when bacteria, most commonly E. coli from the gastrointestinal tract, enter the urethra and travel into the bladder,” explains Anna Cabeca, DO, FACOG, triple-board certified ob-gyn, regenerative and integrative medicine physician. “Women are more susceptible because the urethra is shorter, making it easier for bacteria to reach the bladder.”
Dr. Cabeca says UTI symptoms can include:
- Burning while urinating
- Pelvic pressure
- Urinary urgency
- Frequent urination
- Sometimes blood in the urine
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How menopause impacts UTI risk
If you’re approaching or already in menopause and you’ve noticed more frequent UTIs, it’s not in your head. “As estrogen declines, the vaginal and urethral tissues become thinner and drier, protective Lactobacillus [bacteria] decreases and vaginal pH rises,” says Jasmine Bonder, DNP, MSN, AGACNP-BC, RN, founder and ceo of Clinova Solutions and a board-certified critical care nurse practitioner specializing in chronic and recurrent urinary tract infections. “That makes it easier for UTI-causing bacteria to take hold. These changes, called genitourinary syndrome of menopause [GSM], can also change how urgency and bladder sensation feel, and sex itself can cause more irritation.”
If your doctor determines you’re a good fit, Bonder calls low-dose vaginal estrogen one of the most effective but underused tools for helping to prevent recurrent UTIs at this life stage.
Where did the idea of peeing after sex come from?
Many women have heard that peeing after sex is crucial, but where did the advice originate? “ It comes from a simple mechanical idea,” says Bonder. “Sex can push bacteria toward the urethral opening, so urinating afterward should flush them out before they reach the bladder.”
And while there’s not a ton of research on the topic, Bonder does highlight one study. “The main evidence is a single, small case-control study from 1985, which suggested healthy women who urinate within 15 minutes of sex may be slightly less likely to get a UTI, though the finding wasn’t statistically significant,” adds Bonder.
Do you really need to pee after sex?
So we understand where the idea of peeing after sex comes from, but do you really need to do it to avoid a UTI? “If you feel like going, go,” says Andi Toufexis, DO, a board-certified family medicine physician and sexual health educator. “If you don’t, there’s no need to sit there trying to make it happen. Skipping that trip to the bathroom doesn’t set an infection in motion, and going right away doesn’t guarantee you’ll avoid one. If you fall asleep comfortably and pee when you wake up, that’s fine. We don’t have good evidence that getting up sooner would have made a difference.”
Dr. Cabeca adds that she recommends peeing after sex as a simple supportive health habit, especially for women who have recurrent UTIs, but agrees we don’t have enough strong evidence it prevents infections.
Bonder says she actually advises patients to prioritize hydration after sex first. “Rather than rushing to the bathroom, drink a couple of glasses of water and urinate once your bladder has filled,” recommends Bonder. “A full, steady stream does a much better job of flushing the urethra than a few drops right after sex.”
Safety note: While forgetting to pee after sex or simply not having to go is one thing, Dr. Toufexis says being unable to relieve yourself when you have to go is another. “There’s a difference between having no urge to pee and feeling like your bladder is full but suddenly being unable to pee at all,” adds Dr. Toufexis. “The second situation needs urgent medical attention, especially if you have pain or pressure in your lower belly.”
3 ways to prevent UTIs after sex
While peeing after sex can help, it’s far from the only way to help reduce your risk of UTIs. We asked our experts for their top three tips.
- Stay hydrated outside of the bedroom: Dr. Toufexis says that if you usually drink little water throughout the day, increasing the amount of water you consume can help lessen repeat infections. And staying hydrated also wins in research. “In a randomized trial of women with recurrent UTIs, drinking about an extra 1.5 liters of water daily cut recurrences roughly in half,” adds Bonder.
- Support your bowel health: Thinking about your bowels when trying to prevent UTIs may sound counterintuitive, but they’re closely connected. “Both constipation and diarrhea raise UTI risk because they increase the bacteria present near the urethra,” explains Bonder. Getting plenty of fiber (at least 25 grams per day) can help keep things moving.
- Prioritize vaginal microbiome health: Dr. Cabeca says a vaginal environment that is healthy plays a key role in urinary health. “Avoid harsh cleansers, douching and products that disrupt the vaginal microbiome,” adds Dr. Cabeca.
The bottom line on peeing after sex to prevent UTIs
While peeing after sex can be helpful, especially if you often find yourself getting UTIs, you may not always remember to pee afterward or even feel the need to go, and that’s okay too. Forgetting doesn’t mean you’re doomed to get a UTI. What matters is not just going when you have to, but also supporting your vaginal and urinary health outside the bedroom by staying hydrated, supporting a healthy vaginal microbiome and maintaining regular bowel movements.
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