This one of a kind text illustrates the importance of effective communication in disease prevention and health promotion by building theory-based messages while being responsive to diverse audiences'¬" needs. This book clearly explains core health communication principles and processes for designing effective messages for health communication interventions and campaigns while integrating perspectives from multiple areas including psychology, public health, and social marketing. The desire to impact positive changes in individuals and society motivates many students, practitioners, and researchers of health communication; creating a valuable message accomplishes that change.