I heard a news report about Intermittent Fasting on NPR this morning. I wrote a short post about IF a little while back.
This NPR article focuses more on the fact that your liver depletes its glucose storage after about 12-18 hrs, and then your “fat burning ‘switch’ gets turned on.” While this is true, eating healthfully and weight training will get you most of the way there. IF can be beneficial during a weight loss plateau, and it could be a good way to reset your true hunger feelings, rather than relying on what time of day it is to eat. Eating no carbs for a short period of time can have similar effects as IF without the hunger pangs. No carbs means no incoming sugar and forces the liver into gluconeogenesis, which uses fatty acids and amino acids.
http://www.npr.org/blogs/thesalt/2013/07/29/205845319/two-day-diets-how-mini-fasts-can-help-maximize-weight-loss?