Cite your sources then. I did a ton of research when i set out to lose weight, and i found that the people who said it was super healthy and good for you were almost entirely people who've done it cause they couldn't make the necessary lifestyle changes to sustain a healthy diet. 

All of the *actual* medical professionals i've talked to and read research from say that water fasting can be healthy for a few days, but extended fasts are possiply life-threatening and VERY unhealthy.