She added that data did not support the speculation, noting that “if this were routinely happening … you would see (male microchimerism) in the vast majority of women that we studied”. Lee Nelson, who leads a research team at the Fred Hutchinson centre, told Insider in 2018 there was no scientific evidence to suggest male DNA was routinely retained from women’s sexual partners.
One of the 2012 study’s authors, Professor J. None of the studies support the post’s claim that all men leave part of their DNA in a woman during sex, nor that this purported foreign material is then transferred into the woman’s eggs and children. A 2016 Danish study and a 2005 study from Fred Hutchinson Cancer Research Center academics both raised intercourse as a possible source of male microchimerism, but neither investigated the supposition in depth. Nevertheless, other studies have speculated that sexual intercourse could be one of several potential sources of male cells found in women and girls. Other possible sources of the male DNA were stated as: “A recognised or vanished male twin … an older male sibling, or through non-irradiated blood transfusion.” The study noted the pregnancy history was not known for all of the subjects, which meant pregnancy as a source of the DNA could not be properly evaluated. In women without sons, male DNA can also be acquired from an abortion or a miscarriage.” Rather, it states: “The most likely source of male (microchimerism) in female brain is acquisition of fetal (microchimerism) from pregnancy with a male fetus. However, it does not mention sexual intercourse as a source of the foreign DNA. The significance of the 2012 study was to demonstrate for the first time the presence of genetically distinct male cells in the brains of women, whose bodies were examined during autopsy. For example, it cited 1996 research that found pregnancy set up a “long-term, low-grade chimeric state in the human female”. Identifying the existence of male cells in the bodies of females is not new, as this blog post published by PLOS about the research pointed out. One of the Fred Hutchinson centre’s labs focuses on the concept of “microchimerism”, which it says most commonly involves the exchange of DNA between mother and child during pregnancy. Instead, it involved academics from Seattle’s Fred Hutchinson Cancer Research Center and the University of Washington in Seattle. The study, titled “male microchimerism in the human female brain”, was also misidentified in both cases as involving researchers from the University of Seattle. However, the study it referred to – published in the medical journal PLOS One in 2012 – was not new at the time of either the 2017 article or the Facebook post’s publication. The article cites a “new” study from researchers which purportedly showed “women retain and carry living DNA from every man with whom they have had sexual intercourse”. The idea that women carry the DNA of their sexual partners can be traced to a 2017 article from YourNewsWire, a frequent source of misinformation. The study that appears to be the source of the Facebook post’s claims does not suggest that a man’s DNA is transferred into a woman during sexual intercourse. A Facebook post claims that if a woman has sex with a man, his DNA lives in her forever. The post by a page in Papua New Guinea had been viewed more than 16,000 times and shared more than 175 times at the time of writing. “This also means these other male cells will be found in a fetus when the woman gets pregnant,” it says. The post goes to say the study found the presence of genetically distinct male cells in the brains of women, called “microchimerism”.
So when a woman ovulates, the eggs that she produces contain more of other DNAs.” The man who has had more sex with her, leaves more of his DNA in the woman. This research proves that any man, that a woman has sex with leaves a part of his DNA in the woman. There is now a greater understanding of why God asks us not to have sex before we get married. A research (sic) by university of Seattle USA has proven that. The text of the post goes on to say, “If you have sex with a man, his DNA lives in you forever. The post is headed: “Recent research on DNA transmission via sex.” The Facebook post from May 19 features an image of a man and women wrapped in chains and engaged in a sexual act. A social media post claims that if a woman has sex with a man, his DNA lives in her forever.
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