This CPE self-study activity is one of four modules which is intended to assist nutrition and dietetics practitioners in the comprehension of the Code of Ethics for the Nutrition and Dietetics Profession. The case studies featured in Module 3 are intended to demonstrate potential ethical dilemmas as they relate to conflicts of interest, competence and professional development in practice, integrity in business transactions, product endorsements, and use of social media. Each case study includes points to consider and a quiz to assess the reader's knowledge.