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How 'secondary' sex characters can drive the origin of species
The ostentatious, sometimes bizarre qualities that improve a creature's chances of finding a mate may also drive the reproductive separation of populations and the evolution of new species, say two Indiana University Bloomington biologists. view more (2008-08-26)
Study shows male homosexuality can be explained through a specific model of Darwinian evolution
Reporting in this week's PLoS ONE, an Italian research team, consisting of Andrea Camperio Ciani and Giovanni Zanzotto at the University of Padova and Paolo Cermelli at the University of Torino, found that the evolutionary origin and maintenance of male homosexuality in human populations could be explained by a model based around the idea of... view more... (2008-06-18)
Clitoral Surgery Could Impair Sexual Function For People With Intersex Conditions (pp 1236, 1252)
UK researchers highlight in this week's issue of THE LANCET how clitoral-reduction surgery for infants born with intersex conditions could have a substantial negative impact on sexual functioning in adulthood. Around 1 in 2000 births result in intersex conditions--abnormal development of the reproductive system--which is often characterised by... view more... (2003-04-09)
Adolescents with high-risk sexual attitudes attract peers with similar attitudes
High-risk sexual behavior in adolescents appears to be influenced by the sexual attitudes of peers, and young people select friends whose attitudes about sex are consistent with their own attitudes. view more (2007-05-17)
Alcohol and high-risk sexual behaviors in Botswana
Heavy alcohol consumption is strongly and consistently associated with sexual risk behaviors in both men and women in Botswana, according to one of the few research studies on the topic in sub-Saharan Africa. view more (2006-10-10)
Habitat loss and reserve network selection
What is the minimum combination of areas needed to protect at least one population of every species in a region? - This is a problem commonly addressed when aiming at cost-effective reserve networks. However, because the stress on reserve cost, the properties of the reserve-network for species persistence are often overlooked, typically resulting... view more... (2003-07-02)
Black girls who use marijuana engage in riskier sex, have higher STD rate
Black girls who use marijuana are more likely to engage in risky sexual acts and contract a sexually transmitted disease, a new study finds. view more (2008-08-06)
The untrained eye: Confusing sexual interest with friendliness
New research from Indiana University and Yale suggests that college-age men confuse friendly non-verbal cues with cues for sexual interest because the men have a less discerning eye than women -- but their female peers aren't far behind. view more (2008-04-01)
Obesity linked to hormone imbalance that impacts sexual quality of life
Hormonal changes and diminished sexual quality of life among obese men are related to the degree of obesity, and both are improved after gastric bypass surgery according to a new study accepted for publication in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism (JCEM). view more (2009-03-03)
Psychiatric disorders and sexual trauma are associated with lower urinary tract symptoms
Depression, anxiety disorders and sexual trauma have all been implicated as risk factors in lower urinary tract symptoms (LUTS) such as incontinence and overactive bladder. view more (2009-10-20)
Migraine headaches & sexual desire may be linked
Contrary to the popular cliché, "Not tonight, I have a headache," new research suggests that not all headache sufferers avoid sexual activity. In fact, migraine sufferers reported higher levels of sexual desire than those with other types of headaches. view more (2006-06-12)
'Virginity pledges' by adolescents may bias their reports of premarital sex
Adolescents who sign a "virginity pledge" and then go on to have premarital sex are likely to disavow having signed such a pledge. view more (2006-05-03)
Species thrive when sexual dimorphism broadens their niches
Some Caribbean lizards' strong sexual dimorphism allows them to colonize much larger niches and habitats than they might otherwise occupy, allowing males and females to avoid competing with each other for resources and setting the stage for the population as a whole to thrive. view more (2007-05-10)
Perceptions of Similar Language May Prevent Understanding of Sexual Harassment Policies, MU Researchers Find
Although the Society for Human Resource Management reports that 97 percent of U.S. companies have a written sexual harassment policy, a recent University of Missouri study indicates that those policies might not be effective in preventing workplace harassment. view more (2009-03-20)
The Bioethics and Law Observatory advocates that in certain circumstances sex selection should be permitted for non-therapeutic reasons
In a press conference hold today, the Bioethics and Law Observatory (OBD) of the Universitat de Barcelona (UB) (University of Barcelona), based at the Parc Cient'fic de Barcelona (Barcelona Science Park), presented their latest Declaration on Sex Selection. This document advocates a modification of current legislation in order to permit... view more... (2003-03-13)
Culture affects how teen girls see harassment
Teenage girls of all ethnic and socioeconomic backgrounds still experience sexism and sexual harassment - but cultural factors may control whether they perceive sexism as an environmental problem or as evidence of their own shortcomings. view more (2008-05-15)
Does evolution select for faster evolvers?
It's a mystery why the speed and complexity of evolution appear to increase with time. For example, the fossil record indicates that single-celled life first appeared about 3.5 billion years ago, and it then took about 2.5 billion more years for multi-cellular life to evolve. view more (2007-01-30)
Deakin University study finds no magic pill will solve all erectile problems
Medications are not quite a magic pill to improve the sex lives of men with erectile problems, a Deakin University study has found. view more (2007-07-11)
Unwanted sex appears common in some teen relationships
Many adolescent girls report being threatened or pressured by their partners into having sex, potentially increasing their risk for sexually transmitted infections and pregnancies view more (2006-06-06)
Geography and history shape genetic differences in humans
New research indicates that natural selection may shape the human genome much more slowly than previously thought. view more (2009-06-08)
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