IT'S JUST HYGIENE:

Rapid Rise in PSA Levels a Poor Predictor of Prostate Cancer: Study: Measuring changes over time leads to unnecessary biopsies, researchers say (Jenifer Goodwin, 2/26/11, HealthDay News)

Blood tests that indicate prostate-specific antigen (PSA) levels are rising rapidly over time are of little use in detecting aggressive prostate cancer and should not be done, a new study indicates.
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Current screening guidelines that recommend biopsies for men who have high PSA velocity but no other signs of prostate cancer -- such as a suspected abnormality during a digital rectal exam or high PSA level during a single test -- are leading to many unnecessary biopsies, the researchers said.