15-01-2010, 07:32
Transfemme causing sterility in men is not related to BB causing infertility in women. They are made by the same company, maybe even the same product. Transfemme causes sterility because it lowers testosterone levels and increases estrogen levels. Low testosterone levels in men cause infertility, because testosterone participates in the process that produces sperm and low testosterone leads to a low sperm count. Female fertility is not regulated by testosterone so BB shouldn't cause infertility in this sense. I don't know whether there is another mechanism that may though.