Health Psychology, Health Promotion, and Behavioural Medicine (PSY303) The medical field is moving from focusing on disease and viral transmission to focus on the treatment of lifestyle conditions such as Type 2 diabetes, cancer, and more. Health psychology and behavioural medicine are two separate but related fields that focus on promoting improved physical wellbeing through psychological and behavioural interventions. This field not only addresses illness but also considers effective methods for promoting positive health, such as smoking cessation or increasing exercise engagement. This unit, like Interdisciplinary Approaches to Psychological Science, draws heavily on other disciplines in psychology. As such, health psychology serves as a case study for how we can equip our knowledge of psychology to positively impact the world around us.