Behavioral economics applies principles from economics and psychology to understand how individuals make decisions about food, exercise, and health behaviors. In obesity treatment, this approach helps identify cognitive biases, such as present bias (favoring immediate rewards over long-term benefits), that can lead to unhealthy choices. Interventions based on behavioral economics aim to nudge individuals toward healthier habits by altering their environment, providing incentives, or using reminders. Strategies like portion control, setting achievable goals, and reinforcing positive behaviors can improve adherence to weight management plans, promoting long-term success in obesity treatment.