The course deals with the relationship between lifestyle and health from a clinical and public health perspective. A biopsychosocial perspective is taken by emphasizing the interplay between biological, psychological and social factors and its consequences. Examples of areas covered in the course are the role of intersectionality and psychology in the most common public diseases, quality of life, the role behavior plays for health and ill health, and how behavior can be changed for a healthier lifestyle and for adherence to prescribed treatment. In addition to theoretical elements, exercise is given in motivational interviewing. The course also contains elements in current research and developmental work.