This book provides an overview of health behaviour intervention priorities in LMICs. It covers the most important health risks or problems in LMICs including childhood and maternal under-nutrition, other diet-related risk factors and physical inactivity, sexual and reproductive health, addictive substances, road traffic injury and violence, common mental health risk, parasitic infections and environmental risks. For all these health risks, health behaviour interventions are comprehensively described, with application to LMICs.