This document discusses behavioral change communication (BCC) and its role in public health programs. It defines BCC as a research-based, client-centered approach aimed at promoting behavior change through benefit-oriented and professionally developed services. BCC principles include community involvement, self-esteem promotion, and voluntary participation. The document outlines BCC's role in HIV/AIDS prevention by increasing knowledge, promoting attitude change, improving skills, and reducing stigma. It also discusses using BCC to achieve reproductive and child health goals by targeting influencers like mothers-in-law. Challenges to effective BCC include integrating it fully into programs and ensuring financial and training resources for sustainability.