This book provides a holistic and comprehensive view of child health and nutrition, from conception through the pivotal first two years of a child's life. It is rooted in scientific research and evidence-based practices, ensuring readers receive accurate and up-to-date child health and nutrition information. It synthesizes the latest findings from reputable sources. The book addresses the broader societal implications of child health and nutrition by focusing on the public health aspect. It delves into policies, programs, and strategies to improve child health outcomes on a population level. Readers gain insights into the policies and programs that shape child health and nutrition in society. It critically evaluates existing policies and proposes necessary improvements, making it a crucial resource for policymakers and advocates. Combining theoretical insights with practical applications, the evidence-based volume caters to parents, caregivers, healthcare professionals, and policymakers. It addresses both the theoretical and practical dimensions of this critical stage in a child's life, making it an indispensable resource for those invested in the health and nutrition of children in the first 1,000 days of life. By integrating individual-level guidance with population-level perspectives, this book underscores the lasting impact of early-life interventions. It empowers readers to translate knowledge into action, fostering healthier beginnings and stronger futures through informed decision-making and collaborative responsibility. This book uniquely integrates science, practice, and policy to deliver a comprehensive understanding of the “first 1,000 days,” the most critical window for shaping lifelong health, growth, and development. Unlike conventional texts that focus solely on caregiving or clinical guidance, it distinctly examines how public policies, programs, and health systems influence child health and nutrition outcomes at both individual and population levels. Grounded in robust scientific evidence, it bridges research and real-world application by translating complex findings into clear, actionable guidance. This dual focus on evidence-based knowledge and practical decision-making positions the book as an essential resource for parents, caregivers, health professionals, and policymakers committed to securing healthier outcomes for the next generation.