Before the fact, we know that cancer testing does not reduce mortality, with the possible exception of cervical cancer. PSA tests are the worst offenders.<p><i>Why cancer screening has never been shown to “save lives”—and what we can do about it</i><p><a href="http:&#x2F;&#x2F;www.bmj.com&#x2F;content&#x2F;352&#x2F;bmj.h6080" rel="nofollow">http:&#x2F;&#x2F;www.bmj.com&#x2F;content&#x2F;352&#x2F;bmj.h6080</a>