I had a lumpectomy for breast cancer 14 months ago and have since taken a daily 1 mg. of Arimidex. An arthritic knee and bursitis in a heel have worsened at an accelerated rate since starting Arimidex. Would it be advisable to try reducing the dosage to, e.g., every-other day or 3-5 times weekly without seriously endangering myself to future recurrence of b.c.? I have average weight for my height.