Dr. Eric A. Klein, chairman of the Cleveland Clinic Glickman Urological and Kidney Institute, said that the study "is confirmatory of a lot of other, smaller studies.
"There is a growing realization that we cannot use androgen deprivation therapy in a haphazard fashion," Klein said. "It does save lives or delay progression for men with metastatic prostate cancer so the trade-offs there are reasonable. But in many other cases, the downside probably exceeds the benefit."
The U.S. National Cancer Institute has more on prostate cancer.
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