That doctor doesnt know crap.Giving up food a few days is absolutly good for you. First day=your blood is purified, third day will begin a healing process 7 days can elimate diseases and illnesses.It should always be used with water but lemon spriulina garlic and non citric juices speeds the recovery along with many organ detoxifying vegetables for juicing..Not to mention the mental enlightenment and awarness you can achieve, and my experience is it = feelings of when you were young and enlighentened/ altered awarness and shedding of the skin so to speak.
IM not really aware of what the monks did, but i do know why/how people use to live 800 yrs plus. Im pretty shure they fasted regularly,and probably had no choice but to with no modern means of refrigeration and other luxeries we have.Pretty shure they didnt ingest chlorinated/flouridated water massive amounts of gmo/pesticides/hormones/artificial anything/bleach/refined anything etc.etc etc........................ processe bla bla nitrate bla bla artificial bla.. mercury/b.s.