Jethro Kloss pioneered the ideas that led to the flourishing of the natural foods industry. This book is a complete guide and introduction to the natural lifestyle and has withstood the test of time, selling more than 4 million copies since it was first published in 1939. This new revised and enlarged second edition updates the book with much new material, many additional herbal references and reorganizes it for ease of use with an extensive index. The book includes Kloss family photographs and memories as well.