Safer-Sex Methods: HIV InSite Knowledge Base Chapter December 2003; Content reviewed January 2006: Tim Lane, PhD, MPH, University of California San Francisco Herminia Palacio, MD, MPH, Harris County Health Department, Houston, Texas

Researchers suggest that anal sex is on the rise among teens and adults, particularly those who have unprotected vaginal sex.

Nov 25, 2013 · Nearly 20 percent of British women say they’ve had a same-sex experience. What’s going on?

Prevalence in epidemiology is the proportion of a particular population found to be affected by a medical condition (typically a disease or …

The easiest way to use the female condom for anal sex is to wear it like a ‘male’ condom. Put lubricant in the female condom and then place it over the penis (or a dildo).

Oct 11, 2010 · Last week, I tried to figure out why more women are having anal sex and why it correlates so highly with orgasms. Since 1992, the percentage of women a

If anal sex turns you on, you are definitely not alone, but its prevalence doesn’t change the fact that it’s the riskiest sexual behavior in terms of HIV and other STDs.

HIV Incidence, Prevalence, and Undiagnosed Infections in U.S. Men Who Have Sex With Men Sonia Singh, PhD; Ruiguang Song, PhD; Anna Satcher Johnson, MPH; Eugene McCray, MD; H. Irene Hall, PhD

CIRCUMCISION IN THE UNITED STATES Prevalence, Prophylactic Effects, and Sexual Practice. Edward O. Laumann, PhD; Christopher M. …

Anal sex or anal intercourse is generally the insertion and thrusting of the erect penis into a person’s anus, or anus and rectum, for sexual pleasure. Other forms of anal sex include fingering, the use of sex toys for anal penetration, oral sex …