Chances are, if you have breast cancer you’ve heard about Tamoxifen. I remember the first time my oncologist talked to me about the chemo-infused hormonal-therapy drug. It was during my weekly check-up when I was still having daily radiation. He explained that because the cancer cells found in my right breast were 95 per cent estrogen and progesterone receptor positive, my body’s natural hormones could attach to the cancer cells and help them grow. Obviously I didn’t want that, so I said yes to the drug without even hesitating.