Steiner tackles the theme of nutrition in a refreshingly open way. The job of the scientist is to explain how things act and what effect they have. Steiner considers nutrition in the light of his spiritual-scientific research. He explains the impact of raw food, vegetarian and meat diets, the effects of protein, fats, carbohydrates and salts, individual foodstuffs, as well as the impact of alcohol and nicotine. His insights are vital to anybody with a serious interest in health, diet and spiritual development.