Prostate Health — PSA Screening and What It Means

Prostate health concerns affect millions of men, with prostate cancer being the second most common cancer among men, and one in seven men being diagnosed with it during his lifetime. By age 85, about 90% will have signs of benign prostatic hyperplasia (BPH), and about half of all people with BPH will develop symptoms that require treatment. The prostate-specific antigen (PSA) test has become the standard for prostate cancer screening for 30 years.

Many men experience anxiety about prostate health as they age, particularly regarding PSA testing and what elevated levels might mean. While BPH isn't cancer and doesn't increase the risk of getting prostate cancer, both conditions can cause concerning symptoms and may require monitoring. Understanding PSA screening guidelines, what results indicate, and when to consider testing can help men make informed decisions about their prostate health with their healthcare providers.

Prostate health issues can stem from various factors, many of which are related to normal aging processes. The prostate gland continues to grow during adult life, making BPH the most common prostate condition in people over age 50. The prostate goes through growth periods, with the second beginning around age 25 and continuing during most of a man's life.

Risk factors for prostate problems may include family history, with studies finding that male relatives of men with very enlarged prostates were four times more likely to need BPH surgery. Age, ethnicity, family history, and physical examination findings all influence PSA interpretation and prostate cancer risk. Other factors that can affect prostate health include certain medications, infections, and underlying health conditions such as diabetes or heart disease.

PSA screening decisions should involve shared decision-making between men and their healthcare providers. Current guidelines suggest clinicians should offer prostate cancer screening beginning at age 40 to 45 years for people at increased risk based on Black race, germline mutations, or strong family history of prostate cancer, and regular screening every 2 to 4 years for people aged 50 to 69 years. The USPSTF concludes with moderate certainty that the net benefit of PSA-based screening for prostate cancer in men aged 55 to 69 years is small for some men.

Men experiencing urinary symptoms such as frequent nighttime urination, difficulty starting urination, or changes in urinary patterns should consider discussing testing with their healthcare provider. It's important to see a health care provider if experiencing any urinary symptoms because they could be from a more serious health problem. The decision to screen should consider individual risk factors, life expectancy, and personal preferences about the potential benefits and limitations of testing.

PSA results are interpreted based on age and individual risk factors. For men in their 40s and 50s, PSA greater than 2.5 ng/mL is considered abnormal with a median of 0.6 to 0.7 ng/mL, while for men in their 60s, PSA greater than 4.0 ng/mL is considered abnormal. However, an elevated PSA level may be caused by prostate cancer but can also be caused by other conditions, including an enlarged prostate and inflammation of the prostate. Studies show that up to 86% of individuals with benign prostatic hyperplasia may have elevated levels of serum PSA.

Elevated PSA doesn't automatically indicate cancer, and normal PSA doesn't guarantee absence of prostate problems. For people with a newly elevated PSA, clinicians should repeat the PSA prior to secondary biomarker, imaging, or biopsy. The rate of PSA change over time, family history, physical examination findings, and other factors all contribute to determining whether further evaluation is needed. Results should always be discussed with a healthcare provider who can interpret them in the context of individual health status and risk factors.

While there's no guaranteed way to prevent prostate problems, certain lifestyle factors may support prostate health. Regular physical activity and maintaining a healthy weight can be beneficial, as decreased energy can create a vicious cycle where men feel too tired to exercise, leading to further muscle loss and weight gain, ultimately decreasing testosterone levels. Some research suggests that limiting red meat and dairy consumption may help reduce BPH risk, as the prostate is effective at metabolizing cholesterol, so anything that increases cholesterol levels makes prostate growth more likely.

Men should also be aware that certain medications can affect urinary symptoms or PSA levels. Some over-the-counter or prescription medications can make voiding symptoms worse in men with BPH. Regular medical checkups become increasingly important with age, allowing for early detection of prostate issues and appropriate management. Staying hydrated while managing fluid intake timing, particularly in the evening, can help minimize nighttime urination symptoms.