This document discusses principles of health education. It defines health education as informing, motivating, and helping people adopt healthy practices and lifestyles. The document outlines the communication process between a sender and receiver of a health message. It describes 13 main principles of effective health education, such as credibility of the source, interest and participation of the receiver, comprehension, and reinforcement. The document also discusses different approaches, stages, barriers, and references related to health education.