Also, a fair percentage of breast cancers are NOT HORMONE RECEPTOR POSITIVE AND THEREFORE AROMATASE INHIBITORS WILL NOT BE EFFECTIVE.
The notion that because many breast cancers are hormone receptor positive the elimination of hormones will reduce or eliminate breast cancer is overly simplistic and dangerous. Hormones are essential to life, and the long-term effects of eliminating them are not known.
NO ONE SHOULD BUY PHARMA STOCK Based on this thread. Look at what happened to Vioxx.