An oncology dietitian works with people at risk for or diagnosed with any form of cancer. While not all have oncology dietitians have specialty certification, many have the Board Certified Specialist in Oncology Nutrition (CS0) credential (1). There are many reasons to see an oncology dietitian, but here are our top 10 reasons: 1) To better manage the side effects of cancer treatment. Cancer treatments come with a whole host of unfavorable side effects including: loss of appe