During his lifetime, Dr. Randolph Stone, D.C., D.O., studied every major natural healing art, earning doctors' degrees in osteopathy, chiropractic, and naturopathy. He practiced the healing arts for over 60 years, all the while experimenting with many diets, exercise programs, and therapeutic methods in a constant search for the most effective ways of achieving and maintaining health. Dr. Stone stayed active in his profession until he died at the age of 91. His longevity a fitting testament to his methods.