Despite popular belief about women's weight concerns, young women commonly fail to recognize recent gain of as many as 11 pounds - putting them at risk for cardiovascular disease and other obesity-related conditions. Self-perception of weight gain also appears to be significantly influenced by race, ethnicity and contraceptive methods.

In a study published online and in the March issue of the Journal of Women's Health, University of Texas Medical Branch (UTMB) researchers found that a significant number of women evaluated at six-month intervals did not recognize recent gains in weight.

New research published in the Journal of Leukocyte Biology suggests that high levels of estradiol present prior to ovulation decreases immune system effectiveness resulting in growth and promotion of infection

A new research report in the Journal of Leukocyte Biology suggests that a woman's ovarian cycle plays an important role in her susceptibility to infection. Specifically, researchers from Spain and Austria found that women are most susceptible to infection, such as Candida albicans or other sexually transmitted diseases, during ovulation than at any other time during the reproductive cycle.

A new study of sexually active older women has found that sexual satisfaction in women increases with age and those not engaging in sex are satisfied with their sex lives. A majority of study participants report frequent arousal and orgasm that continue into old age, despite low sexual desire. The study appears in the January issue of The American Journal of Medicine.

One in 13 teenage girls, aged 14 to 20, reported having a group-sex experience, with those young women more likely to have been exposed to pornography and childhood sexual abuse than their peers, according to a new study led by a Boston University School of Public Health (BUSPH) researcher.

Scientists at the Gladstone Institutes have discovered new protein fragments in semen that enhance the ability of HIV, the virus that causes AIDS, to infect new cells - a discovery that one day could help curb the global spread of this deadly pathogen.

HIV/AIDS has killed more than 25 million people around the world since first being identified some 30 years ago. In the United States alone, more than one million people live with HIV/AIDS at an annual cost of $34 billion.

Men may think about sex more often than women do, but a new study suggests that men also think about other biological needs, such as eating and sleep, more frequently than women do, as well.

And the research discredits the persistent stereotype that men think about sex every seven seconds, which would amount to more than 8,000 thoughts about sex in 16 waking hours. In the study, the median number of young men's thought about sex stood at almost 19 times per day. Young women in the study reported a median of nearly 10 thoughts about sex per day.

The more often older married individuals engage in sexual activity, the more likely they are to be happy with both their lives and marriages, according to new research presented in Boston at The Gerontological Society of America's (GSA) 64th Annual Scientific Meeting.

This finding is based on the 2004 General Social Surveys, a public opinion poll conducted on a nationally representative sample of non-institutionalized English and Spanish-speaking person 18 years of age or older living in the U.S. The data analysis was conducted by Adrienne Jackson, PT, PhD, MPA, an assistant professor at Florida Agricultural and Mechanical University.

Researchers at the University of Tampere and the Aalto University, Finland, have shown that the perception of nude bodies is boosted at an early stage of visual processing. The research was funded by the Academy of Finland.

Most people like to look at pictures of nude or scantily clad human bodies. Looking at nude bodies is sexually arousing, and a nude human body is a classic subject in art. Advertising, too, has harnessed half-clothed models to evoke positive images about the products advertised. Brain imaging studies have localized areas in the brain which are specialized in detecting human bodies in the environment, but so far it has been unknown whether the brain processes nude and clothed bodies in different ways.

Adults with congenital heart disease and implanted cardioverter defibrillators (ICDs) often have a high level of fear and anxiety about the device delivering a shock during sex - resulting in sexual performance problems, according to research (Abstract 14165) presented at the American Heart Association's Scientific Sessions 2011.

An ICD is an implanted, battery-powered device that monitors the heartbeat. If the ICD detects a dangerous irregular heartbeat, it delivers a shock to restore normal rhythm. The shock can be painful and some patients say it feels like a kick in the chest.

A topically applied microbicide gel containing a potent anti-HIV drug has been found to significantly reduce infection when applied to rectal tissue that was subsequently exposed to HIV in the laboratory, according to a new study by the UCLA AIDS Institute. The gel was also found to be safe and acceptable to users.

The first-ever phase 1 clinical trial of the rectal HIV-prevention drug known as UC781, a non-nucleoside reverse transcriptase inhibitor, is described in the current edition of the online journal PLoS ONE.