Man doesn't eat for 10 years and is in perfect health:
http://news.bbc.co.uk/1/hi/world/south_asia/3236118.stm
There is more at the link above.
http://news.bbc.co.uk/1/hi/world/south_asia/3236118.stm
Prahlad Jani, a holy man, or fakir, who is over 70 years old, has just spent 10 days under constant observation in Sterling Hospital, in the western Indian city of Ahmedabad.
During that time, he did not consume anything and "neither did he pass urine or stool", according to the hospital's deputy superintendent, Dr Dinesh Desai.
Yet he is in fine mental and physical fettle, say doctors.
Most people can live without food for several weeks, with the body drawing on its fat and protein stores. But the average human can survive for only three to four days without water.
There is more at the link above.