True strength, health, vitality and happiness might not depend on the next super-drug, but on very simple, economical, commonly available, and familiar foods. For the person who wants to live a long and healthy life, who is willing to take full responsibility for their personal wellbeing, Ehret's teachings of a nature-based approach to health through simplicity and moderation offer real hope. Everyone who has put Ehret's simple diet and lifestyle changes into practice has experienced profound positive results. A solution to man's modern ailments already exists. It was proposed and articulated by a nutritionist, in a book written a hundred years ago.