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Thread: Testosterone Tested as Male Contraceptive

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    God/dess Will's Avatar
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    Default Testosterone Tested as Male Contraceptive

    Study Shows Monthly Injections in Men Can Prevent Partners' Pregnancies

    By Salynn Boyles
    WebMD Health News
    Reviewed by Brunilda Nazario, MD

    May 6, 2009 -- After decades of delay, hormonal birth control for men may be a step closer to reality.


    Monthly injections of a testosterone-based contraceptive were 99% effective for preventing partner pregnancy in what researchers say is the largest trial ever of a hormone-based male birth control approach.
    Testosterone therapy is usually given to men to treat a condition resulting from a lack of testosterone. In men, testosterone controls sperm production, erections, and sex drive.


    The study looked at fertile men, and treatment with testosterone was used to decrease sperm production. Testosterone treatment is known to decrease hormones of the brain that signal the testes to produce sperm.
    Just over 1,000 Chinese men between the ages of 20 and 45 who had fathered at least one child within two years of enrollment took part in the study, which was published in The Journal of Clinical Endocrinology & Metabolism.

    The search for a commercially viable male equivalent of the pill has been stalled in recent years, largely due to lack of interest by the pharmaceutical industry, says Elaine Lissner, who directs the Male Contraception Information Project.



    "There has been a lot of consolidation within the industry, and several companies that were working on hormonal birth control for men abandoned development even though their studies were positive," she tells WebMD.


    Companies lost interest, she says, because they concluded that there was not enough of a market for male birth control that required implants or frequent injections.


    An oral male pill is not likely because testosterone is not as effective when taken by mouth and it can be toxic to the liver.
    Studying Testosterone's Effects

    The men in the Chinese study received monthly injections of a form of testosterone known as testosterone undecanoate (TU).
    Lead researcher Yi-Gun Gu, MD, of Beijing's National Research Institute for Family Planning tells WebMD that while the contraceptive was found to be highly effective in the study, TU alone is not likely to be used in non-Asian populations.


    Asian men seem to respond well to testosterone as a form of contraception, while studies in white men have shown it to be much less effective.


    The reasons for this are not clear, but Gu tells WebMD that any hormonal birth control developed for non-Asian men is likely to include another hormone -- progestin.


    Studies have shown the testosterone-progestin combination to be very effective in suppressing fertility in white men.


    The Chinese men in Gu's study took monthly injections of 500 milligrams of TU in tea seed oil for 30 months. This formula is not available in the U.S. and is indicated to treat low testosterone levels with injections typically given every three months.


    Over the course of the trial, nine pregnancies occurred in the partners of 1,045 study participants, or roughly one pregnancy for every 100 men.


    Cont:


    http://www.webmd.com/sex/birth-contr...ceptive?page=2
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    Default Re: Testosterone Tested as Male Contraceptive

    That's just too super cool for words. I know a lot of older and middle age men currently get testosterone shots because it helps them heal faster from things like cuts.
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    Default Re: Testosterone Tested as Male Contraceptive

    Quote Originally Posted by Kylea2 View Post
    That's just too super cool for words.
    I knew you would approve.

    Quote Originally Posted by Kylea2 View Post
    I know a lot of older and middle age men currently get testosterone shots because it helps them heal faster from things like cuts.
    Helps with far more then that in fact, mood, lowered risk of various diseases, libido, etc, etc See:

    http://www.brinkzone.com/general-health/got-test/
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    Default Re: Testosterone Tested as Male Contraceptive

    It's about fucking time!

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    Default Re: Testosterone Tested as Male Contraceptive

    Quote Originally Posted by Victoria669Jones View Post
    It's about fucking time!
    Totally!! 'Fucking' being the operative word here!!
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    Default Re: Testosterone Tested as Male Contraceptive

    Quote Originally Posted by pussyinboots View Post
    Totally!! 'Fucking' being the operative word here!!

    Lol

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    Default Re: Testosterone Tested as Male Contraceptive

    I think it will be quite awhile before it catches on, honestly. For years it's been the social stigma that preventing the pregnancy is on the burden of the woman, at least from what I've seen.

    Plus there's so many men that don't see any need to go to the doctor and consider it emasculating to do so.

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    Default Re: Testosterone Tested as Male Contraceptive

    There is quite an advantage to men in also being in control of conception; at least I can see lots of benefits there.

    Anyway who wants complications? I'd do that monthly if I needed to. But my partner would need to be worth it.
    Last edited by threlayer; 06-05-2010 at 09:49 AM.
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    Default Re: Testosterone Tested as Male Contraceptive

    Quote Originally Posted by threlayer View Post
    There is quite an advantage to men in also being in control of conception; at least I can see lots of benefits there.
    Damn right. Don't have any kids, don't want any.
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