Women's Brains Grow a Bit During Menstrual Cycle

Women experience monthly hormone fluctuations that influence the switching that takes place between their infertile and fertile days, and in a small new study of 30 women, the researchers showed that these estrogen-level changes also affect the hippocampus — the area of the brain that is central to memories, mood and emotions. As the estrogen levels rose, the hippocampus increased slightly in volume, the study showed. The researchers' measurements showed that both the grey and white matter