The American Urological Association has issued new guidelines on prostate cancer screening that suggest annual PSA blood tests might not be necessary for many men, but the same guidelines call for a "baseline" PSA test at the age of 40, rather than 50. Members of the Association noted that the question of when men should be screened is "highly controversial," but they point out that side-effects from unnecessary treatment, such as impotence and incontinence, can dramatically reduce a man's quality of life.
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