The study, which discovered the startling information by accident, was originally trying to determine if women who have been pregnant with a son might be more predisposed to certain neurological diseases that occur more frequently in males.
But as the scientists picked apart the female brain, the study began to veer wildly off course. As it turns out, the female brain is even more mysterious than we previously thought.
The study found that female brains often harbor “male microchimerism”, or in other words, the presence of male DNA that originated from another individual, and are genetically distinct from the cells that make up the rest of the woman.
According to the study: “63% of the females (37 of 59) tested harbored male microchimerism in the brain. Male microchimerism was present in multiple brain regions.”
Women Absorb And Retain DNA From Every Man They Have Sex With, Study Shows