Making a virginity pledge may help some young people postpone the start of sexual activity, according to a new RAND Corporation study.

Satisfactory sexual intercourse for couples lasts from 3 to 13 minutes, contrary to popular fantasy about the need for hours of sexual activity, according to a survey of U.S. and Canadian sex therapists.

How can researchers track where teens go when not in or near home or school to see if this movement has an impact on health-related behavior such as smoking or sexual activity" The answer is through that ubiquitous teen accessory – the cell phone.

Although medication can help extend the lives of men with chronic heart failure, several factors associated with this disease can interfere with a person’s ability to engage in and enjoy sexual activities. Fatigue, depression, medication side effects and the fear of damaging the heart can cause people with chronic heart failure to lose interest in sex or wonder whether this activity is safe for them.

Hormone therapy in early post-menopause increases sexual interest, but does not improve memory, according to a study in the Sept. 25 issue of the journal Neurology.

The first nationally representative survey on the prevalence of sexual activity among older Americans provides a portrait of the intimate lives of people ages 57 to 85.

The first comprehensive national survey of sexual attitudes, behaviors and problems among older adults in the United States has found that most people ages 57 to 85 think of sexuality as an important part of life and that the frequency of sexual activity, for those who are active, declines only slightly from the 50s to the early 70s.

According to a new study published in The Journal of Sexual Medicine, sexual sensation in circumcised and uncircumcised men may not be so different after all. The research, performed in the Department of Psychology of McGill University in Montreal, consisted of genital sensory testing conducted on circumcised and uncircumcised men during states of sexual arousal and non-arousal.

A Canadian study has confirmed what parents have long suspected: dating, sexual activity and substance use seem to make teens feel older than they really are. And, as adolescents get older, the gap between their chronological age and their self-perceived age widens.

In a detailed study that served to investigate the actual nature and content of sexual dreams across a large sample of dream reports from men and women, approximately eight percent of everyday dream reports from both genders contain some form of sexual-related activity.