Doctor Hartz has been in natural healthcare for over 40 years. He has always had a passion to treat the cause of chronic disease .  Taking over a thousand hours of postgraduate study from some of the foremost leaders in Functional and Integrative Medicine in the world and through the treatment of thousands of patients, Dr. Hartz has developed a system of alternative care called Designed Nutrition Systems. He retired to training doctors that are interested in restoring their patients health naturally and creating healthy aging programs to decrease the need for medical intervention. Dr. Hartz recently is scheduled to see patients again on a limited schedule.