He chaired the Clinic’s Breast Cancer Task Force and headed its Section of Thyroid and Parathyroid Surgery. He is a Fellow of the American College of Cardiology and served as President of the American Association of Endocrine Surgeons. He has written over 150 scientific publications and in 1995 published his benchmark long-term nutritional research about arresting and reversing coronary artery disease in severely ill patients. That same study was updated at 12 years and reviewed beyond twenty years in his book, Prevent and Reverse Heart Disease, making it one of the longest longitudinal studies of its type.