NUTRITIONAL MANAGEMENT OF COMPLEX CLINICAL CONDITIONS IN CHILDREN: EVIDENCE-BASED PRINCIPLES

Nutrition not only prevents many childhood illnesses from ever develo-ping, but it also plays a central role in treatment throughout the course of the disease. Its importance grows even further in chronic conditions: persistent in-flammation and increased catabolism raise energy–protein requirements, un-dernutrition weakens immunity and slows wound healing and growth. When properly planned, nutrition improves treatment tolerance, medication response, and rehabilitation success, while reducing infections and length of hospital stay—thereby markedly enhancing quality of life. As the World Health Orga-nization data clearly indicate, millions of children worldwide struggle with stunting and hunger, and undernutrition plays a significant role in under-five mortality. At the same time, millions of adults and children live with overwe-ight/obesity, exclusive breastfeeding in the first six months remains below tar-gets, and average daily salt intake can reach twice the recommended level. This picture is the starting point of the book in your hands: sound nutrition is an in-dispensable component of both prevention and therapy. Nutritional Management of Complex Clinical Conditions in Children: Evi-dence-Based Principles brings together the very topics we often wish were “all in one place.” Beginning with the foundations of pediatric nutrition and beha-vioral eating problems, it moves on to the rational use of vitamins, minerals, and supplements. Then it addresses field scenarios that require nuanced manage-ment—such as food-borne illness and acute diarrhea, protein-energy malnutri-tion and refeeding syndrome, and cow’s-milk protein allergy. The subsequent chapters examine complex conditions in which nutrition can significantly im-pact outcomes, including congenital heart disease, metabolic and chronic kid-ney diseases, immunodeficiencies, rheumatologic and neuromuscular disorders, cerebral palsy, pediatric cancers, surgical patients, and intensive care. For the critically ill child, practical algorithms provide answers to the questions of “when, how, and how much.” What sets this book apart is that its contributors remain faithful to the hie-rarchy of evidence while presenting the everyday realities of care and practical applications with clarity—and guiding readers toward more in-depth study when needed. Rather than rigid recipes, we aim to present the principles of choosing the correct route, what to deliver, how much, and how to make nut-rition feasible at the bedside. I hope these pages support individualized and effective nutrition care in both education and clinical practice. May we ensure that our children are nou-rished in the best possible ways, guided by our knowledge, and delivered with the same care and compassion we feel for them. Prof. Dr. Nihat SAPAN Bursa Uludağ University, Faculty of Medicine, Department of Pediatric Pulmonology, Bursa, Türkiye Assoc. Prof. Dr. Taner Özgür Assoc. Prof. Dr. Şükrü Çekiç