My grandfather lived 20 years after he was diagnosed for prostate cancer, eventually the cancer metastasized and took him away but he did live until early he wa

My grandfather lived 20 years after he was diagnosed for prostate cancer, eventually the cancer metastasized and took him away but he did live until early he was in his 80s at which point he survived my father. It is possible that having his son die within his lifetime had something to do with his demise and he could’ve lived more in other circumstances.