He had been born weak and suffered from kidney and skin disease. In order to restore his health he studied both Western and Eastern medicine extensively. He compiled the information and conclusions of his lifelong study in two books-Chemical Theory of Longevity, published in 1896, and Diet For Health, published in 1898. At this time Japan was being strongly influenced by European culture and science. He cured many patients by having them eat a traditional diet based on brown rice, and a variety of land and sea vegetables.
Foods are the foundation of health and happiness.
Sodium and potassium are the primary antagonistic and complementary clements in food. 3.Grain is properly the staple food of man. Food should be unrefined, whole, and natural. Food should be grown locally and eaten in season. After completely restoring his own health, Ohsawa joined ShokuYo-Kai.