Urinary tract infections in men are uncommon before age 60, but the risk climbs sharply after that. For men under 55, the rate is roughly 1 to 2.4 cases per 1,000 per year. By age 85 and older, it jumps to nearly 8 per 1,000. The good news is that most of the factors driving these infections are preventable or manageable with straightforward habits.
Why Men Get UTIs Less Often
Men have a built-in advantage: a much longer urethra than women. Bacteria have to travel a greater distance from the outside world to reach the bladder, and most never make it. This is why UTIs are overwhelmingly more common in women during younger years. But that protection isn’t absolute, and it erodes with age as prostate changes and other factors come into play.
The bacteria behind male UTIs also differ from those in women. In women, E. coli causes the vast majority of infections. In men, E. coli accounts for only about 25% of bladder infections, with Proteus and Providencia responsible for a large share of the rest. Other organisms like Klebsiella, Pseudomonas, and enterococci fill in the gaps. This broader mix of bacteria is one reason male UTIs are more often considered complicated and typically require longer courses of treatment.
The Prostate Factor
The prostate gland sits just below the bladder, wrapped around the urethra. As men age, the prostate commonly enlarges, a condition called benign prostatic hyperplasia (BPH). When this happens, it squeezes the urethra and partially blocks urine flow. The result is a bladder that never fully empties.
That leftover urine is the problem. Stagnant urine sitting in the bladder creates an ideal environment for bacteria to multiply. If you notice a weak stream, frequent nighttime urination, or a feeling that your bladder isn’t empty after you go, talk to your doctor about prostate management. Treating the underlying obstruction is one of the most effective ways to prevent recurrent infections in older men. Chronic bacterial prostatitis itself is actually the most common cause of relapsing UTIs in men, with E. coli responsible for about 80% of those cases.
Stay Well Hydrated
Drinking enough fluid keeps urine moving through your system regularly, which physically flushes bacteria out of the urinary tract before they can establish an infection. The general recommendation for healthy adults is roughly 11.5 to 15.5 cups (2.7 to 3.7 liters) of total fluid per day, including water from food. If you already have a history of bladder infections or kidney stones, you likely need more.
You don’t need to obsess over hitting a precise number. A simple check: if your urine is pale yellow to nearly clear most of the day, you’re drinking enough. Dark, concentrated urine means bacteria have more time to sit in a hospitable environment.
Hygiene Habits That Matter
Keeping the tip of the penis clean is a basic but important step, especially for uncircumcised men. The foreskin can trap bacteria, which then have a direct path into the urethra. Gently retracting the foreskin and washing underneath with warm water during your daily shower is sufficient. Harsh soaps or antiseptics aren’t necessary and can irritate the skin, potentially making things worse.
If you’re sexually active, urinating after sex helps flush out any bacteria that may have been pushed toward the urethra during intercourse. This advice is well established for women, but the same mechanism applies to men. Make it a habit rather than something you think about only when symptoms appear.
Catheter-Related Prevention
Catheters are one of the biggest risk factors for UTIs in men, particularly in hospital or long-term care settings. A catheter provides a direct highway for bacteria to reach the bladder, bypassing all of the body’s natural defenses. CDC guidelines emphasize a few key principles: catheters should only be used when truly necessary, removed as soon as possible, inserted with sterile technique, and connected to a closed drainage system that stays sealed.
If you use intermittent catheters at home for a condition like urinary retention, clean technique matters enormously. Keep the catheter sterile, wash your hands thoroughly before handling it, and make sure urine flows freely without kinks or blockages. Even small lapses in hygiene with repeated catheterizations can introduce bacteria over time. Ask your urologist about the catheter type and schedule that minimizes your personal risk.
What About Cranberry and D-Mannose?
Cranberry supplements and D-mannose are widely marketed for UTI prevention. The theory behind both is appealing: cranberry contains compounds that may stop bacteria from sticking to the bladder wall, and D-mannose (a sugar) is thought to work similarly by binding to E. coli. In practice, the evidence is underwhelming. A large trial across 99 GP practices in England and Wales found that D-mannose was not effective at preventing UTIs in people with frequent infections. Cranberry data is mixed, with most well-designed studies showing modest or no benefit.
Neither supplement is harmful for most people, so there’s little downside to trying them. But they shouldn’t replace the more reliable strategies like hydration, hygiene, and addressing prostate issues. If you’re having recurrent infections, the cause is almost always structural or bacterial, and supplements won’t fix that.
Recognizing Symptoms Early
Prevention also means catching infections before they escalate. A standard bladder infection in men typically causes burning during urination, urgency, frequency, and sometimes cloudy or strong-smelling urine. Prostatitis, which overlaps significantly with UTIs, adds pelvic or perineal pain and sometimes a tender, swollen prostate. Acute bacterial prostatitis tends to come on fast, often with fever, while chronic bacterial prostatitis is more subtle, presenting as recurring mild symptoms and repeated positive urine cultures over weeks or months.
Because UTIs in men are almost always considered complicated (meaning there’s usually an underlying anatomical or functional reason), any confirmed infection warrants investigation beyond just a course of antibiotics. Your doctor will likely want to understand why the infection happened, especially if it recurs, not just treat the bacteria on the surface.
Prevention Checklist
- Drink enough fluids to keep your urine pale throughout the day, aiming for at least 2.7 to 3.7 liters of total fluid.
- Empty your bladder fully each time you urinate. If you can’t, get your prostate evaluated.
- Clean under the foreskin daily if you’re uncircumcised.
- Urinate after sex to flush bacteria from the urethra.
- Minimize catheter use and follow strict hygiene if catheterization is necessary.
- Address prostate enlargement early, since incomplete bladder emptying is the single biggest driver of UTIs in older men.