I Am 75 With Perfect Health And A National Tennis

I am 75 with perfect health and a National tennis ranking until Jan. 2015--had small breast cancer -lumpectomy + Mammosite radiation and after April --was back on the courts. ..taking Arimidex. In July -tore a hamstring slipping on grasscourts--and did 9 weeks of rest and PT--then tore it again Sept. 25th. [Lost two teeth during this time period]. I wonder if the pills are weakening my muscles and allowing them to tear....and the teeth as well? I think I want to quit the pills and just watch the blood tests and mammograms..Did you see Time Magazine's articles? Hmm?