The Health Belief Model is a psychological framework that helps understand how people's beliefs about health and illness influence their health-related behaviors. This model suggests that individual perceptions of susceptibility to health issues, the severity of those issues, the benefits of taking action, and barriers to taking that action all play crucial roles in motivating behavior change. It connects strongly to how persuasion can be used in contexts like advertising and politics, where messaging can shape these beliefs to encourage healthier choices or support for health policies.