Adherence

Theory-based lifestyle interventions combining dietary and physical activity components with specific behavior change techniques (goal setting, self-monitoring, instructions, credible source) are effective for treating overweight/obesity in post-treatment breast cancer survivors.

Breast cancer survivors aiming for weight loss should engage in structured lifestyle programs that combine a moderate caloric deficit (500-1000 kcal/day) with gradually increasing physical activity (starting at 30 mins/day). These programs must be grounded in behavioral theory and explicitly use techniques like goal setting, self-monitoring, and credible instruction to be effective.