I don’t think for prostate treatment necessarily does. In Biden’s case, he’s been declining for years - it seems like mortal disease comes on the heels of major cognitive decline - sadly I don’t think he’s going to live much longer, and it won’t be prostate cancer that gets him.

Also, most men will get prostate cancer if they live long enough. The approach has changed in recent years, to only treat if it’s growing too fast or you get it very young (because it normally grows so slowly you’ll die of old age first).