CS, your link was great, and I realize just now that I conflated two different programs that played on the same night on my PBS station. The one with the fasting that I mentioned was actually Eat, Fast, and Live Longer with Michael Mosley http://video.kera.org/video/2363127955

It isn't streaming from my PBS station any more, but it may well be other places. Here are results from a YouTube search on Michael Mosley: http://bit.ly/10CkNaG and here is a search on the program name: http://bit.ly/13RGoPM

SRS