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Pot & Testicular Cancer

September 10, 2012 by  

Pot & Testicular Cancer, Some blunt advice for the young, male fans of marijuana: You may want to kill that joint and clutch your crotch — self-check style, that is. Scientists at the University of Southern California say they’ve detected a link between recreational marijuana use and a greater chance among males in their early teens through their mid-30s of contracting a particularly dangerous form of testicular cancer — non-seminoma tumors, according to a small study published today online in CANCER, a peer-reviewed journal of the American Cancer Society.

“The group that is at risk for developing these tumors is overwhelmingly young men. They should be looking and paying attention to changes in their testicles anyway,” said Victoria Cortessis, one of the study’s authors and an assistant professor of preventive medicine at the Keck School of Medicine of USC in Los Angeles.

Further, the fellas’ weed intake “might be something they would want to mention to their usual health-care provider.”

Cortessis and her colleagues analyzed the self-reported recreational drug use of 163 young men who had been diagnosed with testicular cancer. Among those patients who acknowledged indulging in pot, just over half (51 percent) told medical researchers they puffed or ingested cannabis more than once per week.

The team then compared the illegal drug histories of those 163 afflicted men with the lifestyle habits of 292 healthy men of the same age and ethnicity. Inside the data, they saw that men who had used marijuana recreationally were twice as likely to develop mixed-germ-cell tumors, including the deadlier non-seminona tumors. (The 292 unaffected men were “sampled” from the same neighborhoods in which the ill men had lived at the time of their diagnoses, Cortessis said.)

“These tumors usually occur in younger men and carry a somewhat worse prognosis” than other types of testicular cancer, the study reported. Moreover, the USC findings confirmed two previous reports in CANCER of an apparent link between marijuana use and cancer of the testicles, the researchers noted.

Still, the rate of such cancers occurring in men is relatively low: There is a lifetime risk of slightly more than 1 percent, Cortessis said.

“The truth is, the vast majority of men who develop testicular germ-cell tumors survive them. There’s still a small proportion that don’t. Those guys tend to have non-seminonas, unfortunately,” Cortessis said. “But also, non-seminomas require more extensive treatment, including radiation and chemotherapy.

“We’re not concerned only with preventing non-seminomas so that the malignancy doesn’t harm the man, but we’re also concerned about the later health effects for men that may be related to the more-aggressive therapy” (such as chemo), she added.

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