I have had female pattern baldness (which after testing was not due to thyroids, blood problems, etc) since I was in my teens, and it runs in my family. However, during both of my pregnancies, my hair filled back in to an acceptable level (and of course, it fell out again a few months after each birth). What hormone caused the hair to begin growing again, and is there a way to take it (like the birth control pill) to combat female hair loss?