Here it is. Just about everything I have to say about the subject. I didn't write it, but the author has mind melded with my brain. The writing style is very similar to my own.

For my professional scientists friends, this article contains a gazillion citations - like any good article on a controversial subject should.

For everyone else, this is a long article. But it's an easy read written in common English. The only technical term used is "senescence". Simply put, senescence is clearing out your growing number of zombie cells that are running faulty or outdated programming and refuse to die.