@AT404, your above reply mentions..."possibility of cancer returning due to hormones. But maybe it isn't hormones". I gather that you are thinking that the hormones themselves might make the cancer return but that you feel that any return may have nothing to do with the hormones? If any cancer cells have survived the initial treatment and surgery, and then reestablish themselves, in hormone receptive cancers, by depriving those surviving cancer cells of hormones, you are basically cutting off their main food supplies. Think of the hormones as "fertilizer". If you have plants and you feed them with fertilizer, they'll grow fast. With a large patch of weeds, you might spray on a herbicide (like chemo for us), you might also pull out all those that you can see (surgery). Knowing that there may still be dormant seeds left, surely you wouldn't then go soaking the area with fertilizer?