I am 49 year old female with very thinning hair, primarily in the crown. Can women of non-childbearing years take Propecia? Have any studies been done on its effectiveness in women?
There are women who take Propecia (finasteride) and it has worked for them. That being said, it has not been well studied in women and it is not recommended for women, because the long term effects on female cancer risks (ovarian, uterine, breast) are just not well known.
There’s a good overview written earlier this month about female hair loss options — Treatments Available for Female Hair Loss