I'm looking for any review article that mentions clinical studies, involving groups of patients or test subjects, fasting for multiple days. I'd like to know the health effects of such fasts, (juice fasts, water-only fasts, etc.) I am *not* looking for articles written about pre-operative fasting and its relation to anethesiology. I am *not* looking for articles on fasting in relation to Type 2 Diabetes. I am also *not* looking for the effects of long-term hunger on people in impoverished areas of the world. Lastly, I am *not* looking for undocumented webpages, written by crackpot authors touting M.D.'s. Thanks for your help in this difficult search.