Washington, long known this contraceptive for men to use condoms, vasectomy and most recently with ultrasound. As a new option, researchers are developing a male hormonal contraceptive for family planning.
Researchers are making progress on the study of hormonal contraceptive for men, which is a gel or injections of testosterone. But scientists are alerts that this product is still in the research stage and not yet commercially available.
"Research on contraception for men is slow for several reasons, including biological differences between men and women," said John Amory, associate professor of medicine at the University of Washington, as reported from MedicalNewsToday, Wednesday (16/06/2010).
Amory said that infertile women have a period in his life, namely at the time of menstruation, and this allows her to not get pregnant. But men do not have a menstrual period, such as in women.
In addition, the male reproductive system capable of producing 1,000 sperm per second, while women make only one egg per month.
According to Diana Blithe, director of male contraceptive development program at the National Institute of Child Health and Human Development, this study focused on blocking the production of sperm with the use of testosterone is known to cause infertility if the excess amount.
However, Blithe also said that other studies have examined the use of synthetic hormone progestin, which has been used in female contraceptives.
For now, have not been successful male testosterone pills work as a contraceptive because the body absorbs the hormone before it can inhibit sperm production. But researchers have had some success with injections or topical hormones.
For example, a Chinese study published in the Journal of Clinical Endocrinology & Metabolism in June 2009, found that injection of testosterone result in pregnancy rate 1.1 per 1,000 men in more than two years.
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