Michael Moseley made a BBC Horizon programme called Eat, Fast and Live Longer, which was broadcast in August 2012. Parts of it are available all over the internet. There are clips on the page which is linked in the title above, from the BBC.
There's a news item from the BBC here on the documentary and book which accompanies it.
There's a BBC article here about the documentary.
I found the whole documentary here.
There are a huge number of reviews, both positive and negative, on the internet. If you search for "Eat, Fast and Live Longer" you will find more than you can read in an afternoon.