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HIV Infection Quickly Speeds Up Aging, Reports New Blockbuster Study

say recent results from a study show HIV quickly impacts a person's DNA and accelerates biological changes similar to the natural aging process, including death. "The findings suggest that new HIV infection may rapidly cut nearly five years off an individual’s life span relative to an uninfected person," a UCLA press release states.The disease's maturing effect on cells happens within two to three years of HIV infection, according the university researchers. Some of the results of the accelerated aging process can manifest in heart and kidney disease, frailty, and cognitive difficulties.It's not clear how antiretroviral regimens may affect the aging process caused by HIV, but previous studies have shown it happens regardless of medications — and that the powerful medicines that keep HIV at bay may also contribute to accelerated aging.UCLA researchers initially studied 102 men, collecting blood samples six months or less before they became infected with HIV and again two to three years after infection.

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Having older brothers increases chance of being gay, study finds
Journal of Sex Research last week affirmed the longstanding theories of a “fraternal birth order effect,” in which “men’s propensity for homosexuality increases with the number of older biological brothers they have,” the researchers noted in an article for The Conversation.The scientists — Christine Ablaza, Francisco Perales, and Jan Kabatek — noted that past research into fraternal birth order effect had involved small samples. To counter this, researchers used Dutch population registers and followed the lives of nine million people born between 1940 and 1990.While the registers don’t explicitly state sexual orientation, researchers used same-sex partnerships and same-sex marriages to determine an individual’s sexuality.They argue that, despite excluding all gay people who haven’t registered an official partnership or marriage, their findings demonstrate “clear evidence” of fraternal birth order effect on homosexuality.Dutch men with three older brothers are 41% more likely to be in a same-sex relationship than men with three older sisters.They are also 80% more likely to be in a same-sex relationship than men with three younger brothers, which researchers say show that being the youngest sibling increases the likelihood of homosexuality — and that the differences increase with the number of older male siblings.However, even one older brother can make a difference.