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Bearing Sons Leaves Male DNA Traces in Mom’s Brain
September 27, 2012
Giving a whole new meaning to “pregnancy brain,” a new study shows that male DNA—likely left over from pregnancy with a male fetus—can persist in a woman’s brain throughout her life. Although the biological impact of this foreign DNA is unclear, the study also found that women with more male DNA in their brains were less likely to have suffered from Alzheimer’s disease—hinting that the male DNA could help protect the mothers from the disease, the researchers say.
http://www.wired.com/wiredscience/2012/09/son-dna-mom-brain/
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