Sex Difference Current Events | Sex Difference News | 3
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Sexual differences in immune response appear at puberty
The differences in the male and female immune responses, which make females more prone to autoimmune disease and males more subject to infections, are established during puberty. view more (2006-02-22)
Fish with temperature-dependent sex determination face global warming
In vertebrates with separate sexes, sex determination can be genotypic (GSD) or temperature-dependent (TSD). TSD is very common in reptiles, where the ambient temperature during sensitive periods of early development irreversibly determines whether an individual will be male or female. view more (2008-07-30)
Study shows males are more tolerant of same-sex peers
Women have traditionally been viewed as being more social and cooperative than men. However, there is recent evidence that this may not be the case. In fact, studies have shown that men maintain larger social networks with other males compared to women and tend to have longer lasting friendships with members of the same-sex than do women. view more (2009-02-12)
Thermal imaging shatters arousal gender gap myth
A new McGill University study that used thermal imaging technology for the first time ever to measure sexual arousal rates has turned the conventional wisdom that women become aroused more slowly than men on its head. view more (2006-10-02)
Are men in danger of extinction?
Despite having had most of the social determinants of health in their favour, men have higher mortality rates for all 15 leading causes of death and have a life expectancy about seven years shorter than women's. An editorial in this week's BMJ asks are men in danger of extinction? Men's reluctance to embrace preventive strategies has also... view more... (2001-10-31)
Does sex sell? New study shows how to make women respond to sexy ads
Do sexy images sell products? It depends, says a new study in Journal of Consumer Research. If marketers are determined to use sex in advertising, there may be ways to do it that can attract customers of both sexes. view more (2009-02-24)
'POZ parties' signal potential to spread HIV 'superinfection'
The emergence of "POZ Parties"-parties exclusively for HIV positive men to meet other HIV positive men for sex-signals the potential to spread HIV "superinfection,"suggests research in Sexually Transmitted Infections. view more (2005-09-29)
Sex-based prenatal brain differences found
Prenatal sex-based biological differences extend to genetic expression in cerebral cortices. The differences in question are probably associated with later divergences in how our brains develop. view more (2009-10-26)
Lacewing species new to Britain unexpectedly detected in field trials of aphid sex pheromone
Scientists from IACR-Rothamsted1 and Imperial College were surprised to find large numbers of green lacewings in traps baited with a plant-derived compound aimed at improving natural biocontrol of aphid pests2. Close inspection by Stephen Brooks at the Natural History Museum identified these lacewings as Peyerimhoffina gracilis, a species new to... view more... (2001-12-17)
Infant girls in India twice as likely to die as boys
In India, infant girls are twice as likely to die as boys because girls are regarded and treated less favourably. There are also a large number of unexplained female deaths, which may be considered as deaths under suspicious circumstances, argue researchers in this week’s BMJ. view more (2003-07-16)
Risky sexual behavior among male clients of Tijuana sex workers heightens risk of HIV transmission
A study by a bi-national team of global health researchers at the University of California, San Diego School of Medicine, examining HIV infection among male clients of female sex workers in Tijuana, has found that over half of male clients had recently had unprotected sex. view more (2009-07-13)
When it comes to abstinence teens, adults aren't speaking the same language
Abstinence can mean different things to adolescents than to adults. That's one reason why abstinence-only programs do not have strong effects in preventing teenage sexual activity, according to new University of Washington research. view more (2008-08-07)
Genetic conflict in fish led to evolution of new sex chromosomes
University of Maryland biologists have genetically mapped the sex chromosomes of several species of cichlid (pronounced "sick-lid") fish from Lake Malawi, East Africa, and identified a mechanism by which new sex chromosomes may evolve. view more (2009-10-02)
People with dementia survive on average 4 and a half years after diagnosis
People with dementia survive an average of four and a half years after diagnosis, with age, sex, and existing disability all having an influence on life expectancy, finds a study published on bmj.com today. view more (2008-01-11)
Study shows that anal cytology predicts anal precancer in HIV-positive gay men
HIV-positive men who have sex with men are up to 90 times more likely than the general population to develop anal cancer. Detection of precancerous changes (anal dysplasia) by anal cytology — essentially an anal canal Pap smear — is a relatively new procedure and one that has yet to enter standard practice. view more (2007-03-22)
Exercise boosts sex hormone in older men
Older men who take regular and intensive exercise produce more growth hormone and testosterone, the male sex hormone, than those who lead an inactive life, according to researchers at the University of Newcastle-upon-Tyne. Men aged 55-65 who ran more than 40 miles a week were found to have higher levels of both hormones in their bodies compared to... view more... (2000-05-30)
Young people are intentionally taking drink and drugs for better sex
Teenagers and young adults across Europe drink and take drugs as part of deliberate sexual strategies. Findings published today in BioMed Central's open access journal, BMC Public Health, reveal that a third of 16-35 year old males and a quarter of females surveyed are drinking alcohol to increase their chances of sex, while cocaine, ecstasy and... view more... (2008-05-09)
Chinese 'one child family' policy is increasing birth rates of boys
The Chinese 'one child family' policy is distorting birth rates, with an increase in the number of boys, reveals of a study of births to Chinese families living in Italy. view more (2003-12-03)
Who has sex with whom? Study of heterosexual partnerships reveals worryingly low condom use
A high proportion of people are not using condoms when they have sex with a new partner, according to a new study of heterosexual partnerships among British men and women. Among people in their 30s and 40s, and in partnerships where there is an age difference of five or more years, condom use is particularly low. view more (2008-11-12)
A study of men who have sex with men
Unprotected intercourse is primarily something that takes place with a steady partner. This intercourse is not seen as risky behavior in these men, but rather as a significant way of creating intimacy between the two. This is one of the foremost findings of a socio-sexual study of men who have sex with other men. Just over two decades have passed... view more... (2003-11-05)
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