Watching plenty of television combined with low self-esteem, poor relationships with parents, and low academic achievement are some of the factors that may add up to young people having sex before the age of 15.

New findings include data on sexual function, risk behaviors in newly-circumcised men; World leaders urged to scale up life-saving procedure for nations at greatest risk

Teens who repeatedly cut themselves are more likely to engage in risky sexual behavior, increasing their chances of possibly contracting HIV, according to a study in the June issue of the Journal of Developmental and Behavioral Pediatrics.

Adolescents attending college six months after completing high school are significantly less likely to engage in risky sexual behavior than those who do not go to college, according to the first study to directly compare the two groups.

Millions of dollars are spent annually on research to reduce risky and problem behaviors in youth. Conversely, far less has been directed toward research promoting positive development -- particularly in at-risk youth.

New data from six U.S. sites show a dramatic shift by men acutely infected with HIV to choose to have unprotected intercourse only with other HIV-infected partners.

Psychiatry researchers at Washington University School of Medicine in St. Louis have found that a clinical diagnosis of alcohol dependence in young adults is associated with having a high number of sex partners.

People who do not have HIV but seek antiretroviral medications following high-risk sexual encounters are very likely to complete the full monthlong drug regimen, according to a new UCLA AIDS Institute study. Moreover, there is a strong demand for publicly available post-exposure prophylaxis among high-risk populations in Los Angeles County.