Mariana
It's completely ridiculous to decide to do a mastectomy just only because of FBD. My daughter and I stoped our FBD just simple as not wearing any type of bras. You can found lot of info about the direct relation that exist between FBD and bras on Internet. Say to your daughter that do not proceed with her idea, because -besides- FBD doesn't means that the way to a cancer is open.