Urinary tract infections in men are relatively uncommon but far from rare. About 12% of men will experience UTI symptoms at some point in their lives, compared to roughly 40% of women. The gap is real, but it narrows significantly with age, and certain health conditions can push men’s risk much higher.
UTI Rates in Men by Age
For men under 55, the incidence is quite low: roughly 1 to 2.4 cases per 1,000 men per year. That makes UTIs genuinely unusual in younger men, and when one does occur in this age group, it often prompts doctors to look for an underlying anatomical issue rather than treating it as a one-off event.
The picture changes considerably in older men. By age 85 and above, the rate climbs to about 7.7 per 1,000, which approaches the rates seen in women of the same age. The primary driver is an enlarged prostate, a nearly universal condition in aging men. As the prostate grows, it can partially block urine flow, leaving residual urine sitting in the bladder. That stagnant urine becomes a breeding ground for bacteria.
Why Men Get Fewer UTIs Than Women
The main reason for the gender gap is simple plumbing. The male urethra is about 20 centimeters (7 to 8 inches) long. The female urethra is only about 4 centimeters. Bacteria that cause UTIs almost always enter through the urethral opening, so a longer tube means a much longer journey to reach the bladder. Most bacteria don’t make it.
Men also benefit from the prostate gland itself, at least when it’s healthy. Prostatic fluid contains antimicrobial compounds that help kill bacteria in the urinary tract. The physical distance between the urethral opening and the anus is also greater in men, reducing the chance of fecal bacteria migrating to the urethra in the first place.
Risk Factors That Change the Odds
Several conditions can override those built-in protections and make UTIs significantly more likely in men.
- Urinary catheters: This is the single biggest risk factor. About 75% of UTIs acquired in hospitals are associated with catheter use. Catheters provide a direct path for bacteria into the bladder, bypassing the length of the urethra entirely. The longer a catheter stays in, the higher the risk.
- Enlarged prostate: Incomplete bladder emptying from prostate growth creates urinary stasis, giving bacteria time to multiply.
- Diabetes: Higher sugar levels in urine can encourage bacterial growth, and diabetes also impairs the immune response in the urinary tract.
- Kidney stones or structural abnormalities: Anything that blocks or disrupts normal urine flow increases the chance of infection.
- A weakened immune system: Conditions or medications that suppress immune function make it harder for the body to clear bacteria before they establish an infection.
For younger men without these risk factors, a UTI is uncommon enough that doctors typically want to understand why it happened, not just treat it and move on.
Symptoms in Men
The core symptoms overlap with what women experience, but men are more likely to have the infection involve the prostate, which can add its own layer of discomfort. Common signs include unusually frequent urination, a strong and sudden urge to go, and burning or pain during urination. Waking up multiple times at night to urinate is another hallmark.
You may also notice cloudy or foul-smelling urine, pressure or tenderness in the lower abdomen below the navel, or pain in the side or upper back if the infection has reached the kidneys. Fever, chills, nausea, and vomiting suggest a more serious infection that has spread beyond the bladder.
How Male UTIs Are Treated Differently
Women with uncomplicated bladder infections typically take antibiotics for three to five days. Men generally need longer courses. Current guidelines recommend 5 to 7 days for most complicated UTIs, including those involving the upper urinary tract. If a doctor suspects the infection has spread to the prostate (a condition called bacterial prostatitis), treatment often extends to 10 to 14 days because antibiotics penetrate prostate tissue more slowly.
UTIs in men are almost always classified as “complicated” regardless of severity, simply because the male anatomy makes infection less likely in the first place. When one occurs, there’s a higher chance that something structural is contributing, which may mean additional testing. Urine cultures are standard to confirm the specific bacteria involved and ensure the right antibiotic is chosen.
When a UTI Signals Something Else
Because UTIs are uncommon in younger men, a single episode in a man under 50 can be a signal worth investigating. Doctors may check for kidney stones, structural abnormalities in the urinary tract, or prostate problems. Recurrent infections in any age group also warrant a closer look, as they can point to incomplete bladder emptying, chronic prostatitis, or other underlying issues that need their own treatment.
In older men, occasional UTIs are more expected and don’t always indicate a deeper problem. But infections that keep coming back, produce fever, or cause blood in the urine still deserve evaluation beyond a simple antibiotic prescription.