Benign Prostatic Hyperplasia (BPH): What Every Patient Needs to Know

Aug 7

7 min read

If you are a man over 40 and you have noticed you are getting up more at night to use the bathroom, or that your urine stream is not what it used to be, you are experiencing one of the most common conditions of aging in men. Benign prostatic hyperplasia, usually shortened to BPH, is the medical term for a prostate gland that has grown larger over time. It is extremely common, almost universal with age, and almost never cancerous. Still, it can meaningfully affect sleep, comfort, and quality of life if left unaddressed. The encouraging news is that BPH is one of the best understood conditions in men's health, with a clear path from diagnosis to relief, whether that path involves simple lifestyle changes, medication, or a procedure.

What Is BPH?

The prostate is a small gland, normally about the size of a walnut, that sits just below the bladder and wraps around the urethra, the tube that carries urine out of the body. Picture a donut sitting around a garden hose. When the donut is a normal size, water flows freely through the hose. But as men age, the tissue of the prostate can continue growing, the way a donut might slowly puff up around that same hose. As the prostate enlarges, it can squeeze the urethra, narrowing the channel urine has to pass through. This does not mean the bladder or kidneys are diseased. It means the plumbing has a tighter passage to work through, which is why the bladder often has to squeeze harder, and why urination habits change.

Importantly, benign prostatic hyperplasia is not prostate cancer and does not turn into prostate cancer. The word benign means exactly that. It is simply an overgrowth of normal prostate tissue, driven mainly by aging and shifting hormone levels, particularly the way testosterone is converted into a more potent hormone called dihydrotestosterone, or DHT, inside the prostate. DHT is one of the main drivers of prostate tissue growth over a man's lifetime.

Epidemiology

BPH is remarkably common, to the point that most men will eventually experience it if they live long enough. Research shows that approximately 45 percent of men over the age of 45 have some degree of BPH, and that figure climbs to roughly 80 percent of men over 70. Autopsy studies, which look directly at prostate tissue, find histological evidence of BPH in 50 to 60 percent of men in their sixties, and in 80 to 90 percent of men older than 70. Globally, researchers estimate that a man's lifetime risk of developing BPH after age 40 is about 27 percent, though clinically significant, symptom-producing BPH is even more common than that number suggests, since many cases are captured only when symptoms become bothersome enough to prompt a doctor's visit.

Age is, by a wide margin, the single strongest risk factor for BPH. Prevalence rises steadily with each decade, from under 10 percent of men in their thirties and forties to well over half of men by their seventies. Other contributing factors include family history, obesity, type 2 diabetes, and metabolic syndrome, all of which appear to accelerate prostate tissue growth.

How It Presents

The symptoms of BPH are collectively known as lower urinary tract symptoms, and they generally fall into two groups. The first group involves trouble emptying the bladder, including a weak or slow urine stream, straining to start urinating, a feeling that the bladder never fully empties, and dribbling at the end of urination. The second group involves the bladder becoming overactive as it works harder against the narrowed passage, leading to a frequent and sudden urge to urinate, waking up multiple times at night to urinate, a condition called nocturia, and in some cases a sense of urgency that is difficult to control.

These symptoms usually develop gradually over months or years rather than appearing suddenly, and they can wax and wane. In more severe or advanced cases, BPH can lead to complications such as urinary tract infections, bladder stones, or in rare instances, a sudden complete inability to urinate, called acute urinary retention, which requires emergency care.

Diagnostic Tests and Imaging

Diagnosing BPH starts with a conversation. Doctors typically use a standardized questionnaire called the International Prostate Symptom Score, or IPSS, which asks eight questions about urinary symptoms and quality of life and produces a score from 0 to 35. A score of 0 to 7 suggests mild symptoms, 8 to 19 suggests moderate symptoms, and 20 to 35 suggests severe symptoms. This score helps guide how aggressively to treat the condition and gives doctors a consistent way to track whether treatment is working over time.

A physical exam, including a digital rectal exam, allows a doctor to get a rough sense of prostate size and texture, and to screen for anything unusual that might suggest a different cause. Since prostate size matters a great deal in choosing treatment, doctors often measure it more precisely using a transrectal ultrasound, which uses sound waves to calculate the prostate's actual volume in milliliters. A prostate under about 30 to 40 milliliters is generally considered normal to mildly enlarged, while volumes above that threshold are considered more significantly enlarged and may influence which medications or procedures are recommended. A blood test called PSA, or prostate specific antigen, is also typically ordered. While PSA is best known as a prostate cancer screening tool, it also correlates reasonably well with prostate size, since larger prostates tend to produce more PSA, and it helps rule out cancer as a contributing cause of symptoms. Additional tests may include a urine flow study, called uroflowmetry, which measures how fast urine flows during urination, and a post-void residual test, which checks how much urine remains in the bladder after voiding using ultrasound or a catheter.

How to Treat It

Treatment for BPH is tailored to how bothersome the symptoms are and how large the prostate has become, and it typically follows a step-up approach. For mild symptoms, doctors often start with watchful waiting combined with lifestyle adjustments, such as reducing evening fluid intake, cutting back on caffeine and alcohol, and timing bathroom trips.

When medication is needed, there are several effective classes to choose from, each targeting the problem differently. Alpha blockers, including tamsulosin, alfuzosin, silodosin, terazosin, and doxazosin, relax the smooth muscle in the prostate and the neck of the bladder within days, making it easier for urine to pass, though they do not shrink the prostate itself. Five-alpha reductase inhibitors, including finasteride and dutasteride, work differently: they block the conversion of testosterone into DHT, which can shrink the prostate over several months and slow its future growth, making them especially useful for men with larger prostates.

A third option, and one worth understanding in detail, is the phosphodiesterase type 5 inhibitor tadalafil, more widely known by the brand name Cialis. Tadalafil is FDA approved at a low daily dose of 5 milligrams specifically for the treatment of BPH symptoms, in addition to its original use for erectile dysfunction. Tadalafil works because the same PDE5 enzyme that affects blood vessels in the erectile tissue is also present in the smooth muscle of the prostate, bladder neck, and urethra. By boosting a signaling molecule called cyclic GMP, tadalafil relaxes this smooth muscle, improves blood flow and oxygenation to prostate tissue, and appears to reduce inflammation within the prostate, all of which can ease urinary symptoms similarly well to alpha blockers, with many men noticing improvement within four to eight weeks. What makes tadalafil particularly interesting is a body of research suggesting benefits that extend beyond the prostate. Because it relaxes smooth muscle in blood vessels throughout the body, not just the prostate, tadalafil has been associated in recent studies with reduced rates of major cardiovascular events, including heart attack and stroke, as well as lower all-cause mortality, among men taking it regularly. This makes tadalafil a compelling option for men who have both BPH and overlapping heart health concerns, though as with any medication, it should be selected in partnership with a doctor who can weigh individual cardiovascular risk factors and other medications, particularly nitrates, which cannot be safely combined with tadalafil.

For men with both an enlarged prostate and bothersome symptoms, doctors sometimes combine an alpha blocker with a five-alpha reductase inhibitor for a stronger, complementary effect. When medications are not enough, or when complications like urinary retention or bladder stones develop, procedural options become appropriate. These range from minimally invasive treatments performed in an office setting, such as the Rezum system, which uses steam to shrink prostate tissue, to more involved surgical procedures including transurethral resection of the prostate, commonly called TURP, laser procedures such as Holmium laser enucleation, photoselective vaporization, aquablation, and prostate artery embolization. The right choice depends on prostate size, symptom severity, a man's overall health, and personal preference, and is best worked out together with a urologist.

How to Prevent It

Because BPH is so closely tied to aging and hormone changes, there is no guaranteed way to prevent it entirely. However, emerging research suggests that the same habits that protect metabolic and cardiovascular health also appear to slow its progression. Since elevated blood sugar, insulin resistance, obesity, and chronic inflammation are all linked to faster prostate growth, maintaining a healthy weight, staying physically active, and managing conditions like type 2 diabetes and high cholesterol may help slow BPH progression alongside their other well known benefits. Regular exercise, a diet rich in vegetables and lower in red meat and refined carbohydrates, moderating alcohol intake, and not smoking are all reasonable, evidence-informed steps. Routine checkups that include a conversation about urinary symptoms also matter, since catching bothersome symptoms early allows treatment to start before complications like urinary retention or bladder damage develop.

Living With BPH

For most men, a BPH diagnosis is not a medical emergency but a chronic condition to manage over time, much like blood pressure or cholesterol. Many men find real relief from lifestyle changes and a single daily medication, and continue to enjoy full, active lives without ever needing a procedure. Regular follow-up, typically checking in on symptoms with the IPSS questionnaire and monitoring PSA and prostate size over time, helps ensure treatment continues to match the condition as it evolves. It is also worth remembering that BPH and prostate cancer are entirely separate conditions, and having one does not increase the risk of the other, though both should be screened for as part of routine men's health care after age 50, or earlier for men with additional risk factors.

Trusted Resources

For more information, patients can turn to the Urology Care Foundation, the official patient education arm of the American Urological Association, at urologyhealth.org, the National Institute of Diabetes and Digestive and Kidney Diseases at niddk.nih.gov, and the Mayo Clinic at mayoclinic.org. These organizations provide up to date, evidence based guidance on diagnosis, medication options, and procedures for BPH.

Medical Disclaimer

This article is intended for general educational purposes only and does not constitute medical advice. It is not a substitute for professional medical diagnosis, treatment, or care. Always consult a qualified healthcare provider regarding any questions you may have about a medical condition, medication, or treatment plan, and never disregard professional medical advice or delay seeking it because of information read in this article.