Whether you are child in Baltimore, Beijing, Nairobi or New Delhi, the onset of adolescence triggers a surprisingly common set of rigidly enforced gender expectations that are linked to increased lifelong risks of everything from HIV and depression to violence and suicide. That’s the key finding from a groundbreaking 15-country study.
Gender matters when it comes to what’s most likely to elevate blood pressure in young to middle-aged adults. The volume of blood pumped from the left ventricle during heartbeats, i.e., stroke volume, is the main determinant of blood pressure levels in women, while blood pressure in men is more likely to be determined by the amount of resistance in the body’s blood vessels.
The gender gap in death from heart attack has reduced over the past two decades particularly in younger women, according to research presented today at ESC Congress.1 The study in over 50 000 patients found that overall in-hospital mortality for heart attack patients was halved during the 20 year period.
Traditional cultural norms about gendered roles and femininity still matter for women’s choice of college major, according to new research. Researcher have shown how long-held cultural norms about femininity may contribute to ongoing gender segregation in academia, and to the college majors that women decide to pursue in particular.
There is no major difference in the gender identity development of children raised by same-sex parents compared to those adopted by heterosexual couples. The toys that children prefer to play with in their preschool years are much more tell-tale about whether they will grow up to conform to typical gender norms.
New research suggests that some mothers’ and fathers’ psychological well-being may suffer when their work and family identities – and the amount of financial support they provide – conflict with conventional gender roles.
Politicians are often expected to have expertise in certain areas, based on their gender. A researcher looked at whether US representatives’ tweets support this stereotype. She found that political party plays more of a role than gender in lawmakers’ Twitter habits.
Presumably by now you’ve fully embraced your inner dragonfly and fake death every time a man starts annoying you. But if you really want to get back to nature, there’s another bug you can emulate: the cowpea seed beetle, whose females have developed thicker reproductive tracts to fight off the males and their spiky penises.
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Scientists say this is an example of “extreme genital co-evolution” (hot). The males developed spiky penises to hold onto the females, even if they try to kick them off during sex. The spikes also could cause enough damage to kill the female after her eggs are fertilized, ensuring that she will only produce that male’s young. So in response, females have developed thicker reproductive tracts to protect themselves from the males’ barbs, and also so they can live to bone another day.
Like many species, the cowpea seed beetle appears to be in an evolution race, but as New Scientist writes, “there are no winners, because defeating the opposite sex would be somewhat counterproductive.” Uhh, says you. Because we got that artificial womb; artificial sperm won’t be far behind.