Michael Werner presents a new type of challenge to sceptics. A fit family man in his 50s, he has a doctorate in Chemistry and is the managing director of a research institute in Switzerland. In this remarkable account he describes how he stopped eating in 2001 and has survived perfectly well without food ever since. This book features reports from those who have attempted to follow this way of life, as well as possible scientific explanations of how one could 'live on light'.