Not sure but will share a comment. My Dad was about 75 when his prostate cancer started. They told him they did not recommend surgery. He was basically healthy but had some heart blockage they were watching. They did radiation. They told him he would probably die from something else first. He lived to be 87. But he spent the last 5 years in constant battle with spreading of the prostate cancer. His QOL had deteriorated drastically. Was it old age, advancing prostate cancer, who knows. But it wasnt the way i want to go out. I had one out of 12 samples with cancer at 68. My PSA was 1.2. I said bullshit and told them to take it out. Appear to be cancer free 4 years later. But I have issues. impotence and incontinence.