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A Mother's Intuition
« on: October 01, 2012, 06:08:42 AM »

Ever feel like you can't get your kids off your mind?

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 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.

The Alzheimer's trend hinted that the male DNA could help protect mothers from the disease, the researchers say.

During mammalian pregnancy, the mother and fetus exchange DNA and cells. Previous work has shown fetal cells can linger in the mother's blood and bone for decades, a condition researchers call fetal microchimerism.

The lingering of the fetal DNA, research suggests, may be a mixed blessing: The cells may help the mother's health by promoting tissue repair and improving the immune system, but the cells may also cause adverse effects, such as autoimmune reactions.

Does it have anything to do with a mother's brain growing with pregnancy?
Perhaps this is a contributor to post traumatic abortion syndrome as well?

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