This book presents the principles of medical nutrition therapy, along with numerous case examples, for the nutrition of pregnant and breastfeeding women, infants aged 0–1 and healthy children, as well as for conditions such as malnutrition, obesity, gastroenteritis, malabsorption disorders, inborn errors of metabolism, enteral and parenteral nutrition, infectious diseases, food allergies, burns and wounds, anemia, autism, neurological diseases, intensive care, diabetes, kidney diseases, and liver and heart diseases. It has been prepared by active academics and clinicians with clinical experience who closely follow scientific developments, with the aim of creating a resource that can guide future dietitians and students in nutrition and dietetics throughout their professional lives.