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Study fails to link vasectomy to cancer

A medical riddle that arose more than a decade ago is now closer to resolution. Three studies in the early 1990s suggested that men who had undergone vasectomy seemed more apt to get prostate cancer than were men who hadn't had the procedure. Other studies found no connection, but uncertainty has lingered.

Researchers in New Zealand report in the June 19 Journal of the American Medical Association that men with prostate cancer are no more likely to have had a vasectomy than healthy men are.

Between 1996 and 1998, the researchers scoured data from a national cancer registry and located 923 men between the ages of 40 and 74 who had had prostate cancer at some point. The scientists matched these men with 1,224 men of similar age who hadn't had prostate cancer.

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