Interesting news reported by BBC here. A fakir claims that he has not eaten (or drunk water) for decades. He was observed for 10 days in a Ahmedabad hospital (under video surveylence and isolation). He would only take 100 ml water for mouthwash and spit it back again (duly measured). He claims that there is a hole in his palate due to which he is in that state. His bladder walls seem to absorb the water back into the system ...