Check that again. I have and know it well his 400 page book on fasting. Also I read his other info on fasting including his 600 page book on natural hygeine. Dr Fuhrman learned to fast from Dr Shelton who had fasted his mother and him. I never saw that about getting rid of all fat. If someone does that (below 5%), they will die.
High on water must be talking about something else since you are right about burning fat (ketosis).