And it means a lot if Facebook is cool with it, because the company is notoriously prim - it has been known to delete images of breastfeeding.

The issue, of course, lies in the dual identity of breasts, at once performing a basic feeding function and yet also a sign of sexual maturity.

Historically, the herb was used specifically by nursing or lactating women to increase the flow of milk. This herb offers countless benefits to the human body.

Because it is spread in so many ways -- during sex, on needles shared by drug users, in breast milk and in blood -- there is no single easy way to prevent infection.

For long stretches of history, the average woman had only about 100 menstrual cycles in her lifetime, because frequent pregnancies and breastfeeding kept her from menstruating.