From Wikipedia:
In 2006, Cain was diagnosed with Stage IV cancer in his colon and metastases to his liver and given a 30-percent chance of survival. Cain underwent surgery and chemotherapy following the diagnosis, and has since reported that he is in remission.
Five years ago I was diagnosed with stage 4 Kidney Cancer, RCC, and told I had a 5% chance of survival. Believe me, if I wanted to carry on an affair with another woman I could have. Assuming I’d have been able to find one who was willing...but I wan’t interested so I didn’t.