Is it healthy to juice fast with all naked brand juice drinks?

Absolutely Not. Study: http://www.Washingtonian.Com/blogs/wellbeing/healthy-eating/naked-juice-admits-its-not-so-natural.Php for an update on continued dishonest/deceptive marketing. Study: big fat lies, mcgovern's report, mary enig, dietdoctor.Com, gary taubes, peter attia, loren cordain, science for smart people, the men who made us fat, nusi.Org, fatchance.Html, the men who made us thin, http://goo.Gl/arhou2.
No. No, it's not. Your body need protein, vitamins, carbohydrates, essential fats, minerals and fiber for proper function. Stay away from fad diets.