Prostate Cancer Screening: 50 Percent False Positives

(NaturalNews) As many as 50 percent of all prostate cancer diagnoses may be cases of over-diagnosis, according to a study published in the British Medical Journal.

Over-diagnosis refers to the detection of a cancer that, if left untreated, would never have any negative effects on a person's life. This happens with cancers that grow slowly and do not spread to other organs, so that a patient dies of other causes before ever experiencing any symptoms.

Because prostate cancers tend to be very slow growing, the U.S. Preventive Services Task Force has recommended against screening men over the age of 74 for prostate cancer. Treatments for the disease can have severe side effects, including impotence and incontinence, and may even increase the risk of early death. Another paper, published in the same issue of the journal, found that the prostate specific antigen (PSA) test commonly used to assess prostate cancer risk cannot reliably predict this risk in most cases.

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