U.S. health officials on Friday approved a new, longer-lasting "morning-after" pill to prevent pregnancy after unprotected sex.
Obese women are likelier to neglect contraception, obese men are more prone to impotence and both are far less sexually active than counterparts of normal weight, a study said on Wednesday.
The syphilis epidemic has begun to take its toll in China, with the number of new infections increasing by 30 percent each year.
One child was born with syphilis every hour in China in 2008, researchers said Thursday, as new money from the country's growing economy fuels the world's fastest-growing epidemic of the disease.
More U.S. babies are being born with syphilis, many of them to women in the South who use crack cocaine and work in the sex trade, according to a U.S. government report released on Thursday.
Erectile tissue grown in the laboratory has successfully restored sexual function in rabbits, bringing hope to men sexually impaired by accident or disease, U.S. researchers said Tuesday in a published study.
Male factory workers in China who got very high doses of a chemical that's been widely used in hard plastic bottles had high rates of sexual problems, researchers reported Wednesday.
National Taiwan University unveiled Wednesday the development of a convenient biochip that will allow users to conduct accurate semen analysis at home to check for male infertility.
Circumcision may help protect men from the AIDS virus but it does not protect the wives and female partners of infected men, researchers reported on Thursday.
Intensive professional cycling training damages sperm, according to a study presented at the annual conference of the European Society of Human Reproduction and Embryology in Amsterdam recently.