This is an article discussing the nature of fasting; this includes the technical aspects of exactly why and how it works like it does. Many people tout fasting as a "miracle cure", but the truth is there is concrete science backing up these claims.
There is plenty of information to help us to live better. The problem can be that we have been taught incorrectly by our parents. Sure, our parents may have done the best they could with what they knew at the time, but now that has been called into question. This article provides some important information applicable to the 21st Century.