The book aims to shed light on some of the unexplored aspects of nutrition science and the recent studies in this field. Nutrients are necessary for the growth and development of organisms especially human beings and must be consumed in a regulated manner every day. This field delves into the processes of absorption, biosynthesis, excretion, catabolism, etc. Undernutrition or malnutrition can result in many health problems in humans. Nutrition science has applications in numerous other scientific fields such as food science, dietetics, etc. Chapters in this book, are compiled to discuss the most vital concepts and emerging trends in the field of nutrition science. From theories to research to practical applications, case studies related to all contemporary topics of relevance to this field have been included. It will provide comprehensive knowledge to the readers and will be beneficial to students and researchers alike.