question: Hi, I am a 62 year old female, 165 pound that had breast cancer with chemo/radiation/masectomy.   2 years later a stem cell transplant for MDS.   My doctor tells me today that my kidneys are functioning 45-50% and my kidneys are equivalent to an 80 year old.   What am I to do?   I am on Crestor, Paxil, Xalatan and Vitamin D3 and Caltrate 600.