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Male DNA is commonly found in the brains of women, most likely derived from prior pregnancy with a male fetus. While the medical implications of male DNA and male cells in the brain are unknown, the harboring of genetic material and cells that were exchanged between fetus and mother during pregnancy has been linked to autoimmune diseases and cancer, sometimes for better and other times for worse.

Researcher William F. N. Chan says that his findings support the likelihood that fetal cells frequently cross the human blood-brain barrier and that what scientists call "microchimerism" in the brain is relatively common.
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And there’s no way to fool her–you’ll reveal everything about yourself as soon as you start to dance. But first, your shirt: A new psychological study reveals that men who show skin are viewed as more sensitive, but less competent than those who are fully clothed. There’s a similar response to scantily clad women.

In LiveScience.com, Stephanie Pappas quotes researcher Kurt Gray as saying, "An important thing about our study is that, unlike much previous research, ours applies to both sexes." People wearing few clothes were seen as having less moral responsibility, but at the same time they were seen as more deserving of protection.
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Will something like this ever happen? Researchers are honing in on the development of what may be the first oral contraceptive for men. Since it turns out the women actually want sex more than men do, this is a good thing to know.

Researchers found that low doses of a drug stopped sperm production in mice with no apparent side effects. And crucial for a contraceptive, normal fertility was restored soon after drug administration was terminated.
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