A man's ability to produce sperm may depend on his ability to handle stress, according to a study from Italy that looked at the impact of short- and longer-term stress.
The road to hell is paved with good intentions, as they say: the more housework married men do, the less sex they have, according to a new study published Wednesday.
It can seem like infertility is on the rise, especially in developed countries as women wait longer to start families. But according to a new analysis of 277 surveys, conducted by researchers at the World Health Organization and other institutions, infertility trends around the world stayed largely the same from 1990 to 2010.
Groundbreaking work with lab mice has boosted hopes for a male contraceptive pill, researchers in the United States reported on Thursday.
Women who choose birth control pills, the patch or vaginal ring are 20 times more likely to have an unplanned pregnancy than those using long-term methods such as IUDs and implants, a study released Wednesday found.
U.S. health authorities on Friday urged all boys age 11-12 to get a routine vaccination against the most common sexually transmitted disease, human papillomavirus, or HPV.
Some adolescent girls who get the human papillomavirus (HPV) vaccine to prevent cervical cancer wrongly think they no longer need to practice safe sex, U.S. researchers said on Monday.
The number of Americans newly infected with syphilis has fallen for the first time in a decade, but sexually transmitted diseases (STDs) continue to take a staggering toll on the United States, with 19 million new infections each year at a cost of US$17 billion annually.
A vaccine against cervical cancer hasn't been all that popular for girls. It may be even a harder sell for boys now that it's been recommended for them too.
Mexico plans to administer the vaccine against human papillomavirus (HPV), which can cause cervical cancer, to all girls beginning next year, the country's health ministry said Tuesday.