Obesity is one of the three most common diseases, affecting about one-third of adults. Obesity also increases vulnerability to metabolic disorders, psychological disorders, and various cancers and decreases quality of life. Therefore, obesity must be adequately addressed in medical school. Here, I will review how obesity education is implemented in medical school curricula in Korea. Many studies have shown that students who are well educated about obesity through various educational methods reduce their prejudice toward obese patients. The Korean Society for the Study of Obesity is an interdisciplinary academy, including experts from fields such as general research, clinical practice, nutrition, nursing, exercise, and rehabilitation. They aim to identify the core competencies of obesity education necessary for medical students, develop curricula of obesity education, and present examples of lectures and discussions. In the future, health professionals who receive such education will be able to take better care of obese patients without bias.