Dietrich Klinghardt, MD, Ph.D., studied medicine & psychology in Freiburg, Germany, completing his Ph.D. on the involvement of the autonomic nervous system in autoimmune disorders. Early in his career, he became interested in the sequelae of chronic toxicity (especially lead, mercury, environmental pollutants & electromagnetic fields) for the course of illness. While working in India he encountered Eastern concepts of disease etiology & blended them with his Western training. This laid the foundation for his 5-level system of Integrative Medicine. In the US he spent three years as a full-time emergency physician before becoming Medical Director of the Santa Fe Pain Centre. Dr. Klinghardt has contributed significantly to the understanding of metal toxicity and its connection with chronic infections, illness & pain. He has been instrumental in advancing various fields within biological medicine–non-invasive pain management, injection techniques for pain & orthopedic dysfunction, anti-aging medicine, toxicology, pediatrics (neuro-developmental disorders), energy psychology, biological dentistry, & others. He has also developed Autonomic Response Testing, a comprehensive diagnostic system that has helped many practitioners to become accomplished holistic physicians. He founded Sophia Health Institute in 2012, and is actively involved in patient care at his clinic.