I remember that video from a couple of years ago. Ironically I discussed this issue on Huffington Post a while ago too. I have not seen any evidence that DCA works for human cancer patients. Actually this question of mine a while back provides two links, with one of them demonstrating the effectiveness of a ketogenic diet protocol for brain cancer on a respected peer reviewed paper.
I’m on the side that with the extreme cost, and dangers of conventional cancer treatments, that if an alternative protocol was demonstrated to be anywhere nearly as effective we should be embracing it. I’m not talking about snake oil or magic cures, just common sense.