This article discusses the various factors that affect child health and wellbeing, including nutrition, safe environments, healthy lifestyles, and routine sleep. It also explores the effects of poor health and wellbeing on young children, such as developmental delays, poor academic achievement, and physical health issues. Finally, the article provides strategies for supporting child health and wellbeing, including sharing information with parents and carers, working in partnership with parents, and providing a safe environment through timely immunization.