Well, I even found a study in Pubmed saying that DCA can induce liver cancer, so may be it's not that safe (but isn't cancer also a possible side effect of chemotherapy and radiotherapy?)
Anyway, here is the researcher's web page:
http://www.depmed.ualberta.ca/dca/
Whatever happens, it's nice to watch the videos! I found it uplifting.
Best wishes to you all