Which statement about benign prostatic hypertrophy (BPH) is incorrect?

Saw palmetto is a herbal supplement often discussed in the context of managing symptoms associated with benign prostatic hypertrophy (BPH). However, its effectiveness is not guaranteed for all patients. Studies have shown variable results, with some indicating minimal benefit compared to placebo. This implies that while some men may find it helpful in alleviating their symptoms, it cannot be stated as "always effective."

The other statements regarding BPH are supported by clinical observations. Dribbling and nocturia are indeed common complaints associated with BPH, as the condition leads to urinary obstruction and changes in bladder functionality. Additionally, the prostate-specific antigen (PSA) levels in men with BPH may be elevated due to the enlarged prostate, although the increase is typically not as pronounced as in prostate cancer. Statistically, BPH is estimated to affect up to 50% of men older than 50 years, indicating its prevalence within this age group.