Upside-Down Menstruation

[UrsulaV]

Tampons.

*slap forehead*

 

[sophia8]

RETROGRADE MENSTRUATION
This theory was promoted by Dr. John Sampson in the 1920s. He surmised that menstrual tissue flows backwards through the fallopian tubes (called “retrograde flow”) and deposits on the pelvic organs where it seeds and grows. However, there is little evidence that endometrial cells can actually attach to women’s pelvic organs and grow. Years later, researchers found that 90% of women have retrograde flow. But since most women don’t develop endometriosis, some doctors have concluded that something else (perhaps an immune system problem or hormonal dysfunction) may be the trigger for endometriosis. The Retrograde Menstruation Theory also doesn’t explain how endometriosis develops in women who’ve had a hysterectomy or a tubal ligation nor why, in rare cases, men have developed endometriosis when they’ve been treated with oestrogen after prostate surgery.

From: http://www.endometriosis.org/causes.html

 

[Art Vandelay]

Trust me - I've menstruated. (In spades.)

Mensturating spades sounds painful.

Tampons.

Unless the tampons are inserted into the uterus, that doesn't really answer the question.