Gay teenagers who have had at least four sexual partners are at increased risk of contracting human papillomavirus (HPV), a new study suggests.
A new U.S. study offers more evidence that childhood experience may have health effects that echo into adulthood.
Men aren't from Mars and women aren't from Venus, but their brains really are wired differently, a new study suggests
Keeping sperm from being ejaculated may provide the key to creating a birth control drug for men, according to a new mouse study
New research shows that men with too much testosterone and men with too little face health risks.