Issues related to nutrition are among the most pressing public health concerns in modern times. Worldwide, nearly 1 billion individuals are undernourished, with over a billion more individuals deficient in protein or one or more essential micronutrients. Malnutrition plays a role in in more than half of all childhood deaths. Effects of malnutrition include mortality, decreased economic productivity, morbidities, such as blindness and stunting, and development of chronic diseases. Conversely, overnutrition has emerged as current and growing threat to the world's health. Two-thirds of adults in the United States are overweight or obese, and 35 percent of the world's population are overweight. Two-thirds of the world's population living in countries where more people die from overnutrition than undernutrition. Chronic diseases are similarly of concern, with heart disease, cancer, and other diet-related chronic diseases among the leading causes of death in the world. This book is a comprehensive introduction to Public Health Nutrition, and has a unique balance, focusing on the health of communities and nations, and presenting the most significant public health nutrition problems and solutions worldwide. It presents key concepts in public health nutrition and presents case studies from the United States and world, and from across all life stages, to illustrate these concepts. Designed for MPH programs, this book will prepare students to become successful global public health professionals, with a clear understanding of the critical need for public health nutrition programs around the globe. Unlike other texts of its kind, Public Health Nutrition: Principles and Practice in Community and Global Health includes a unique explanation of nutritional science as it relates to public health. Readers will come away with a solid understanding of nutrition and public health infrastructure, enabling them to be more effective in improving public health nutrition.