Rewards and Menstruation

by F.

Interesting new research about hormones and the brain:

Fluctuations in sex hormone levels during women’s menstrual cycles affect the responsiveness of their brains’ reward circuitry, an imaging study at the National Institute of Mental Health (NIMH), a component of the National Institutes of Health (NIH), has revealed. While women were winning rewards, their circuitry was more active if they were in a menstrual phase preceding ovulation and dominated by estrogen, compared to a phase when estrogen and progesterone are present.

That’s from the NIH press release, I believe. (Anyway, check out the whole thing at EurekAlert here.) The Economist also picks up this story here.