fotd

"....whenever a female ovulates, an egg literary bursts through the wall of the ovaries. To heal that puncture, the cells of the ovary have to divide and reproduce. everytime a woman gets pregnant and bears a child, her lifetime risk of getting ovarian cancer drops by 10%.

when a woman is menstruating, the estrogen that flows through her uterus stimulates the growth of the uterine lining, causing a flurry of potentially dangerous cell division. women who do not menstruate frequently spare the endometrium that risk."

-what the dog saw, malcolm gladwell