Sex Difference Current Events | Sex Difference News | 7
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Weight gain between first and second pregnancies associated with increased odds of male second child
A slightly greater number of males than females are born worldwide every year. In recent decades, although there are still more baby boys born than girls, there has been an apparent decline in the ratio of male to female newborns in several industrialized countries, including Canada, Denmark, England, Germany, Japan and the United States. view more (2007-09-25)
New research challenges assumptions about dementia incidence
A new study on the incidence of dementia in England and Wales, published in the forthcoming issue of the open access journal PLoS Medicine, challenges three commonly held assumptions about dementia. view more (2005-08-23)
Genes from the father facilitate the formation of new species
The two closely related bird species, the collared flycatcher and the pied flycatcher, can reproduce with each other, but the females are more strongly attracted to a male of their own species. view more (2007-10-05)
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)
A new male-specific gene in algae unveils an origin of male and female
By studying the genetics of two closely related species of green algae that practice different forms of sexual reproduction, researchers have shed light on one route by which evolution gave rise to reproduction though the joining of distinct sperm and egg cells. view more (2006-12-19)
Influence of sex and handedness on brain is similar in capuchin monkeys and humans
Capuchin monkeys are playful, inquisitive primates known for their manual dexterity, complex social behavior, and cognitive abilities. view more (2007-08-30)
Pitt study shows linkage between teen girls' weight and sexual behavior
A University of Pittsburgh study sheds new light on the relationship between race, body weight and sexual behavior among adolescent girls. view more (2009-10-30)
Study Sheds New Light on Causes of Common Sexually Transmitted Diseases
Oral sex may be a risk factor for nongonococcal urethritis (NGU), one of the most common sexually transmitted diseases affecting both men and women. view more (2006-01-04)
Teen drug education also helps curb risky sexual behavior, study finds
School-based drug education programs for adolescents can have a long-term positive impact on sexual behavior in addition to curbing substance abuse, according to a new RAND Corporation study. view more (2009-04-30)
Study is first to link viewing of sexual content on TV to subsequent teen pregnancy
Adolescents who have high levels of exposure to television programs that contain sexual content are twice as likely to be involved in a pregnancy over the following three years as their peers who watch few such shows, according to a new RAND Corporation study. view more (2008-11-03)
Abnormal heart function associated with reduced capacity for exercise
Patients with abnormal diastolic function (when the heart is relaxed and expanded) in the left ventricle of the heart have a substantially lower maximum capacity for exercise, according to a study in the January 21 issue of JAMA. view more (2009-01-21)
Genes may explain why children who live without dads have earlier sex
Previous research has found that children raised in homes without a biological father have sex earlier than children raised in traditional nuclear families. view more (2009-09-15)
Surprising Results For Ugandan HIV Intervention Trial (pp 633, 645)
Results of a study in this week's issue of THE LANCET show how interventions to promote safer sex and the control of sexually transmitted diseases did not reduce the incidence of HIV infection in an area of rural Uganda. Treatment of sexually transmitted infections (STIs) and behavioural interventions are the main methods to prevent HIV in... view more... (2003-02-19)
Sex inequalities found in primary care treatment of heart disease
A study in this week's BMJ reports that treatment of heart disease in primary care is systematically biased towards men, despite no suggestion of sex differences in the management of these patients in England's national service framework for coronary heart disease. Data for over 5,000 men and women with ischaemic heart disease in the Trent health... view more... (2001-04-03)
Angiogenesis linked to poor survival in patients with rare type of ovarian cancer
Researchers from The University of Texas M. D. Anderson Cancer Center have found that increased angiogenesis, or blood vessel formation, and vascular endothelial growth factor expression are associated with poor survival in women with sex cord-stromal ovarian tumors. view more (2009-02-06)
Gay men's risky sexual behavior linked to feeling undesirable
Gay men who are not considered sexually desirable are more likely to engage in risky sexual behavior according to new research out of the University of Toronto. They may also develop psychological problems as a consequence of feeling undesirable. view more (2008-12-01)
It's a unisex brain with specific signals that trigger 'male' behavior
Research by Yale scientists shows that males and females have essentially unisex brains - at least in flies - according to a recent report in Cell designed to identify factors that are responsible for sex differences in behavior. view more (2008-05-01)
Experts call for better research into link between women's hormones and mood disorders
Countless movies and TV shows make light of women's so-called "moodiness", often jokingly attributing it to their menstrual cycle or, conversely, to menopause. view more (2007-12-13)
Small RNAs can play critical roles in male infertility/contraception
University of Nevada School of Medicine scientists in the Department of Physiology and Cell Biology have discovered insight into the reproductive workings of the male sex chromosome that may have significant implications for male infertility and contraception. view more (2009-04-10)
Survival after heart attack improves in younger women
In recent years, women, particularly younger women, experienced larger improvements in hospital mortality after myocardial infarction (MI) than men, according to a study published in the Oct. 26, 2009 issue of Archives of Internal Medicine. view more (2009-10-26)
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