Navigation Links
Depo-Provera Birth Control Might Raise Breast Cancer Risk
Date:4/4/2012

WEDNESDAY, April 4 (HealthDay News) -- There appears to be a link between an injectable form of progestin-only birth control, best known as Depo-Provera, and an increased risk of breast cancer in young women, new research suggests.

For the study, researchers compared more than 1,000 Seattle-area women, aged 20 to 44, who were diagnosed with breast cancer, and more than 900 women without breast cancer.

Recent use of the injectable contraceptive (formally called depo-medroxyprogesterone acetate or DMPA) for a year or longer was associated with a 2.2-fold increased risk of invasive breast cancer, the study found.

This increased risk appeared to fade within months after women stopped using the contraceptive, and women who used the contraceptive for less than a year or who had stopped using it more than a year earlier did not have any increased risk of breast cancer, according to the findings published online and in the April 15 print issue of the journal Cancer Research.

"Although breast cancer is rare among young women and the elevated risk of breast cancer associated with DMPA appears to dissipate after discontinuation of use, our findings emphasize the importance of identifying the potential risks associated with specific forms of contraceptives given the number of available alternatives," study leader Dr. Christopher Li, a breast cancer epidemiologist at the Fred Hutchinson Cancer Research Center in Seattle, and colleagues wrote.

"In the United States, many women have numerous options for contraception, and so it is important to balance their risks and benefits when making contraceptive choices," Li noted in a news release from the research center.

While the study uncovered an association between Depo-Provera and raised breast cancer risk, it could not prove a cause-and-effect relationship.

Commenting on the study, Dr. Elizabeth Poynor, a gynecologic oncologist and pelvic surgeon at Lenox Hill Hospital in New York City, said, "This study further confirms that some types of progestins are not healthy for the breast. For women who are at elevated risk to develop breast cancer based on family history, or even age, this type of contraception may not be a good choice for them."

But another expert cautioned that the study did have its limits.

Dr. Freya Schnabel, director of breast surgery at NYU Clinical Cancer Center in New York City, noted that the women in the study who seemed at highest risk of developing breast cancer while on Depo-Provera were those with a family history of the disease or women who had never had children (another known risk factor).

Furthermore, she said, "the study did not include information about all breast cancer risk factors in the participants, and this is a real limitation of the analysis which could impact on the results. Also, the mechanism by which the progesterone would increase risk only in current users is not clear."

According to Schnabel, all of this means that "more detailed studies are needed to clarify the relationship between this contraceptive method and risk of breast cancer."

The research was funded by the U.S. National Cancer Institute and the Department of Defense Breast Cancer Research Program.

More information

Planned Parenthood has more about the birth control shot.

-- Robert Preidt

SOURCES: Elizabeth Poynor, M.D., Ph.D., Lenox Hill Hospital, New York City; Freya Schnabel, M.D., director of breast surgery, NYU Clinical Cancer Center, New York City; Fred Hutchinson Cancer Research Center, news release, April 4, 2012


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Giving Birth to Small Babies Linked to Heart Disease in Moms: Study
2. Late Preemie Birth May Be Linked to Higher Asthma Risk
3. Timing of Preemie Birth May Be Key to Kids Health Later
4. Another Batch of Birth Control Pills Recalled for Faulty Packaging
5. Women with rheumatoid arthritis and lupus give birth to fewer children
6. Weekend Delivery Doesnt Hurt Babies With Birth Defects: Study
7. Study weighs risks and benefits of birthing facilities
8. Risk of Preterm Birth Rises for Hispanic Women the Longer Theyre in U.S.
9. Study finds residence in US a risk factor for preterm birth
10. Pfizer Recalls 1 Million Packets of Birth Control Pills
11. When Mom-to-Bes Overweight and Smokes, Risk for Birth Defects Rises
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Depo-Provera Birth Control Might Raise Breast Cancer Risk
(Date:6/27/2016)... Viejo, California (PRWEB) , ... June 27, 2016 , ... ... are fully customizable inside of Final Cut Pro X," said Christina Austin - CEO ... another unique style. Final Cut Pro X users can now reveal the ...
(Date:6/27/2016)... ... June 27, 2016 , ... ... strategic partnership with Connance, a healthcare industry leader providing predictive analytics to ... technology combine to provide health systems, hospitals and ambulatory surgical centers with ...
(Date:6/27/2016)... Overland Park, KS (PRWEB) , ... June 27, 2016 , ... ... leader in retailers of Eyeglasses . , Millions of individuals in the United ... life, eyeglasses have become a way to both correct vision and make a fashion ...
(Date:6/26/2016)... ... 26, 2016 , ... On June 10-11, 2016, A Forever Recovery, a holistic ... World’s Longest Breakfast Table in Battle Creek, MI, where the rehabilitation facility is located. ... some of the world’s leading providers of cereal and other breakfast foods. Its residents ...
(Date:6/26/2016)... ... June 26, 2016 , ... PawPaws brand pet supplements ... that was developed to enhance the health of felines. The formula is all-natural and ... main herbs in the PawPaws Cat Kidney Support Supplement Soft Chews are ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... -- Jazz Pharmaceuticals plc (Nasdaq: JAZZ ) ... Improvements Act of 1976, as amended ("HSR"), with respect ... Nasdaq: CPXX ) expired effective June 24, ... As previously announced on May 31, 2016, Jazz Pharmaceuticals ... which Jazz Pharmaceuticals has commenced a tender offer for ...
(Date:6/24/2016)... HILL, N.C. , June 24, 2016 /PRNewswire/ ... healthcare decisions and regulators/payers have placed more emphasis ... new environment, patient support programs in the pharmaceutical ... for patients, medications. Consequently, pharmaceutical companies are focusing ... ensure they are providing products and services that ...
(Date:6/24/2016)... CAMBRIDGE, Mass. , June 24, 2016 /PRNewswire/ ... the Spaulding Rehabilitation Network,s Dean Center for ... of Physical Medicine and Rehabilitation, MIT Hacking Medicine, ... Center for Innovation, today announced the five finalists ... Hackathon for Lyme disease.  More than 100 scientists, ...
Breaking Medicine Technology: