Pervasive nutritional deficiency disorders impact overall health, cognitive development, and susceptibility to chronic diseases. The absence of vital nutrients leads to weakened immune systems, stunted growth, cognitive impairments, and increased disease vulnerability. Particularly affecting vulnerable populations such as infants, children, pregnant women, and the elderly, these deficiencies pose risks that extend from compromised academic performance to chronic health issues. Causes and Management of Nutritional Deficiency Disorders delves into the web of nutrition-related challenges, exploring the root causes and effective management strategies that form the backbone of this indispensable resource. The book sheds light on the critical importance of addressing nutritional deficiencies, beginning with the profound impact on physical health. Essential nutrients, from proteins to vitamins and minerals, are dissected in detail, unveiling their pivotal roles in immune system fortification, growth and development, bone health, and cardiovascular well-being. Gain insights into the intricate relationship between cognitive development, mental health, and nutrient deficiencies, discovering how inadequacies can lead to cognitive impairments, learning difficulties, and compromised mental well-being. Designed as an invaluable reference for nutritional research, this book covers a spectrum of deficiency disorders, from Protein Energy Malnutrition to Vitamin D Deficiency, offering in-depth insights that resonate with undergraduate courses, postgraduate studies, and the world of PhD research.