This is a very informative documentary on the benefits of fasting to assist in recovering physical and mental health. My husband followed these guidelines while undergoing chemotherapy for lymphoma. It greatly reduced side-effects during chemo. And, it seems it may have helped the chemo do it's job, as featured in this documentary, the oncology expert's research studies found it could. If you have any kind of physical or mental illness, will be doing yourself a favor to watch this documentary.