Urinary tract infections in men are uncommon but not rare. About 12% of men (3 in 25) will experience UTI symptoms at some point in their lives, compared to roughly 40% of women. In the United States, male UTIs account for nearly 2.8 million outpatient medical visits per year. The risk is heavily skewed by age: young men almost never get them, while men over 50 see a sharp increase.
UTI Rates by Age
For men under 50, the incidence is strikingly low, roughly 5 to 8 cases per 10,000 men per year. The prevalence of bacteria in the urine among young men without symptoms is 0.1% or less. When a man in this age group does develop a UTI, doctors often investigate whether an underlying structural abnormality is involved, because the infection is unusual enough to warrant a closer look.
After age 50, UTI rates climb significantly. The primary driver is prostate enlargement, which becomes increasingly common with age. An enlarged prostate can partially block urine flow, leaving residual urine sitting in the bladder. That stagnant urine becomes a breeding ground for bacteria. By the time men reach their 70s and 80s, UTIs become a routine clinical concern, particularly for those in hospitals or long-term care facilities where catheter use is common.
Why Men Get Fewer UTIs Than Women
The difference comes down to plumbing. The male urethra is significantly longer than the female urethra, which means bacteria have to travel a much greater distance to reach the bladder. In women, the short urethra and its proximity to the rectum make bacterial entry far easier. This anatomical advantage gives men natural protection for most of their lives, which is why UTIs in younger men are so unusual and often prompt further investigation.
What Raises the Risk
Several factors can override that anatomical protection. Prostate enlargement is the most common one in older men, but it’s far from the only contributor. Urinary catheters, which are frequently used during hospital stays and in nursing homes, introduce bacteria directly into the urinary tract and are a leading cause of male UTIs. In fact, medical guidelines classify all male UTIs as “complicated,” meaning they carry a higher risk of involving deeper structures like the prostate or kidneys.
Other risk factors include:
- History of sexually transmitted infections, which can cause scarring or narrowing of the urethra
- Urethral stricture, a narrowing that prevents complete bladder emptying
- Recent urological procedures, such as cystoscopy or prostate biopsy
- Being uncircumcised, which slightly increases the chance of bacterial colonization
- Kidney stones or other obstructions that trap urine in the system
Symptoms in Men
The core symptoms overlap with what women experience: a burning sensation during urination, a frequent or urgent need to go, and urine that looks cloudy or has an unusual smell. But men are more likely to also feel pain or pressure in the lower abdomen or perineum (the area between the scrotum and rectum), which can signal that the infection has reached the prostate.
Fever, chills, or pain in the lower back or sides suggest the infection may have spread to the kidneys. Because male UTIs are classified as complicated by default, doctors typically order a urine culture rather than treating based on symptoms alone. The standard diagnostic threshold is 100,000 or more bacterial colonies per milliliter of urine.
The Connection to Prostatitis
One reason male UTIs get taken seriously is their relationship with the prostate. The prostate sits right at the base of the bladder, surrounding the urethra, so bacteria causing a UTI can easily migrate into prostate tissue. An acute prostate infection causes intense pelvic pain, difficulty urinating, and often high fever. It typically responds to a longer course of antibiotics than a simple bladder infection would require.
Chronic bacterial prostatitis is a trickier problem. It shows up as recurrent UTIs where the same bacterial strain keeps appearing in urine cultures. Between flare-ups, bacteria essentially hide within the prostate, where they’re harder for antibiotics to reach. Men with a history of urethral stricture, prostate enlargement, or prior catheterization are at higher risk for this pattern. Treatment often requires weeks of antibiotics rather than the shorter courses used for straightforward bladder infections.
How Treatment Differs From Women
When women develop an uncomplicated UTI, a short course of antibiotics (often just three days) is standard. For men, treatment runs longer, typically 7 to 14 days, because of the higher likelihood that the infection involves the prostate or other deeper structures. Your doctor will almost always want a urine culture to identify the specific bacteria and confirm it responds to the chosen antibiotic.
If you’re a younger man with your first UTI, expect your doctor to ask about your urinary habits, sexual history, and possibly order imaging to rule out structural problems. For older men, the conversation usually focuses on prostate health and whether incomplete bladder emptying is contributing to the problem. Recurrent infections in men of any age typically prompt a referral to a urologist for further evaluation.