Navigation Links
Study Links Vasectomy to Aggressive Prostate Cancer
Date:7/10/2014

THURSDAY, July 10, 2014 (HealthDay News) -- Men who have a vasectomy may be at increased risk for aggressive prostate cancer, a new study suggests.

But the risk is comparatively small, the researchers acknowledged. And several urologists not involved with the study said more research is needed to determine if the study findings are truly accurate.

For the study, Harvard researchers analyzed data from more than 49,400 American men who were followed for 24 years, starting in 1986. During that time, 6,023 cases of prostate cancer were diagnosed among the men, including 811 fatal cases.

The 25 percent of the men in the study who'd had a vasectomy had a 10 percent increased risk of developing prostate cancer, according to the study published online July 7 in the Journal of Clinical Oncology.

Vasectomy was not linked with an increased risk of low-grade prostate cancer. But it was associated with a 20 percent higher risk of advanced prostate cancer and a 19 percent greater risk of fatal prostate cancer, respectively, the study authors said.

Even among men who had regular prostate-specific antigen (PSA) screening tests for prostate cancer, those who had a vasectomy were 56 percent more likely to develop fatal prostate cancer. This link was strongest among men who had a vasectomy at a younger age.

However, the absolute risk of developing deadly prostate cancer was small, the study authors noted -- 16 of every 1,000 men.

"This study follows our initial publication on vasectomy and prostate cancer in 1993, with 19 additional years of follow-up and tenfold greater number of cases. The results support the hypothesis that vasectomy is associated with an increased risk of advanced or lethal prostate cancer," study co-author Lorelei Mucci, associate professor of epidemiology at the Harvard School of Public Health, said in a university news release.

About 15 percent of men in the United States have a vasectomy. Prostate cancer is the second leading cause of death among American men, although most men diagnosed with the disease don't die from it.

"The decision to opt for a vasectomy as a form of birth control is a highly personal one and a man should discuss the risks and benefits with his physician," study co-author Kathryn Wilson, a research associate in the department of epidemiology, said in the university news release.

Dr. Louis Kavoussi is chairman of urology at North Shore-LIJ Health System in New Hyde Park, N.Y. He said: "I would be cautious about applying these findings to clinical practice right now. This is not like cigarette smoking causing a large number of people to develop lung cancer. This is a small increase in the risk of prostate cancer. I think further studies really need to be mandated in a better controlled fashion.

"There are a whole host of potential unknown reasons why this potentially could be real," he added. "On the other hand, this is a retrospective study -- a backwards-looking study over many, many years, and the increased risk is small. So can this be an error in statistics? There are many papers over the years that don't show a correlation with this."

Dr. Aaron Katz, chairman of urology at Winthrop-University Hospital in Mineola, N.Y., suggested that men who've undergone a vasectomy may simply have their cancers caught more often because they see their doctor more often.

"Several studies have looked at the association between vasectomy and prostate cancer. It is well known that men who have had a vasectomy are more likely to be seen more frequently by urologists in follow-up than men who never had a vasectomy, and will undergo more frequent PSA testing," he said.

The Harvard researchers said they were able to compensate for factors such as more frequent visits to doctors before reaching their conclusions.

Kavoussi added: "The implications of this study, if it becomes dogma, can be quite profound in society. All of a sudden birth control has been pushed entirely onto women. There are potential side effect issues with birth control for women as well."

Support for the study was provided by grants from the U.S. National Cancer Institute, among other sources.

More information

The U.S. National Library of Medicine has more about prostate cancer.

SOURCES: Harvard School of Public Health, news release, July 9, 2014; Louis Kavoussi, M.D., chairman of urology, North Shore-LIJ Health System, New Hyde Park, N.Y.; Aaron Katz, M.D., chairman of urology, Winthrop-University Hospital, Mineola, N.Y.

--


'/>"/>
Copyright©2014 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Study Suggests Vaccine May Help Kids With Brain Cancer
2. Study reveals how cancer drug causes diabetic-like state
3. Coffee Drinking in Pregnancy Wont Lead to Sleepless Baby: Study
4. Lower GI problems plague many with rheumatoid arthritis, Mayo Clinic study finds
5. Veggies Like Broccoli, Cabbage May Help Fight Breast Cancer: Study
6. No Added Cancer Risk From Hip Replacement Materials: Study
7. Reported Decline in U.S. Pneumonia Deaths May Be False: Study
8. Early Study Finds Some Promise for Lung Cancer Vaccine
9. Narcissists Often Ace Job Interviews, Study Finds
10. Sexual objectification of female artists in music videos exists regardless of race, MU study finds
11. Soy may alleviate hot flashes in menopause, large-scale study finds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/20/2017)... ... September 20, 2017 , ... ... specializing in medical device compliance and commercialization, has just released a new ... , FDA is more adamant than ever about medical device, pharmaceutical, and ...
(Date:9/20/2017)... ... September 20, 2017 , ... Announced that Clear ... commercial support services market) has entered into an agreement on September 1, 2017 ... The PGSD is the first private Dental School to launch an online, accredited ...
(Date:9/20/2017)... ... September 20, 2017 , ... ... gather for the National Athletic Trainers’ Association Annual Clinical Symposium and Expo. New ... It is also when Athletic Trainers are acknowledged by their peers with accolades ...
(Date:9/20/2017)... ... ... Five consumer packaged goods (CPG) products were selected by the SupplySide editorial team ... was named to the short list in the Specialty Supplements category. , One ... SupplySide Central on Sept. 27 and 28 at Mandalay Bay Resort in Las Vegas, ...
(Date:9/20/2017)... ... September 20, 2017 , ... Health & Safety Institute (HSI) is offering ... 24- and 40-Hour courses from now until November 30, 2017 to assist with the ... discounted prices to all businesses and government agencies – whether or not they will ...
Breaking Medicine News(10 mins):
(Date:9/12/2017)... -- Consumer reviews on the independent review site Consumer Affairs ... for hearing aids, ranking it higher than Miracle Ear ™, ... ... Hearing Aids ... store that provides high performance, state-of-the-art, German-engineered hearing aids directly to ...
(Date:9/9/2017)... , Sept. 8, 2017 Dealmed Medical Supplies, ... supplier of medical equipment, supplies, drugs, vaccines, and specialty ... entered into an agreement to acquire Vantage Medical Supplies, ... in Holtsville, New York . ... supplying new and emerging medical practices, will operate under ...
(Date:9/7/2017)... Sept. 7, 2017  For nearly two decades, New Life Agency has ... Reproduction Insurance industry. Today, New Life Agency announces a powerful three-way partnership ... ... ... http://pharmacarecard.com/ (PRNewsfoto/PharmaCareCard) ...
Breaking Medicine Technology: