Patrick Quillin, PhD, RD, CNS, is a well-known expert in the area of nutrition and cancer. He has 40 years experience as a clinical nutritionist, of which 10 years were spent as the Vice President of Nutrition for Cancer Treatment Centers of America (CTCA), where he worked with thousands of cancer patients in multiple hospital settings. According to Quillin, cancer has escalated from a once obscure disease to a leading cause of death worldwide. Chemotherapy, radiation, and surgery may reduce tumor burden but do not change the underlying causes of the disease.