Routine screening is the best way to catch cancer early and control the disease, but in the case of prostate tumors, such testing may do men more harm than good.
That's why a government panel is urging that healthy men not be tested for prostate-specific antigen (PSA), a protein made by prostate cells that, at high levels, can indicate cancer. The PSA test is the most common way to screen for prostate cancer, and millions of men over 50 currently get the blood-based test at every yearly checkup.
But in many of these men, positive PSA tests may signal slow-growing tumors...
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