I honestly don't think they know what the long term effects are. The data doesn't show a correlation but is that just for now and it will change with more data? Also, if you do fertility treatments and NEVER have a baby, that automatically increases your risk for breast cancer etc. Isn't that an extra kick in the a$$? I'm not much help I know. For me, I am already high risk for BC and ovarian cancer (BRCA gene) and will be removing my ovaries in a few years. No sense risking it for me.