Comprised exclusively of clinical cases covering disorders of vitamin D and its clinical management, this concise, practical casebook will provide clinicians in endocrinology with the best real-world strategies to properly diagnose and treat the various forms of the condition they may encounter. Each chapter is a case that opens with a unique clinical presentation, followed by a description of the diagnosis, assessment and management techniques used to treat it, as well as the case outcome and clinical pearls and pitfalls. Cases included illustrate different causes of deficiency as well as management strategies, including deficiency in healthy patients and infants, in eating disorders and gastric bypass, surgical and chronic hypoparathyroidism, and chronic kidney disease, among others. Pragmatic and reader-friendly, Vitamin D: A Clinical Casebook will be an excellent resource for clinical endocrinologists, nutritionists, and family and emergency medicine physicians alike.