This issue of Critical Care Clinics, Guest Edited by Dr. Rinaldo Bellomo, focuses on Modern Critical Care Endocrinology. Article topics include: Diabetes insipidus and SIADH in the ICU; Estrogen therapy in ICU patients; The angiotensin family, ACE and ACE 2; Angiotensin II in vasodilatory shock; Vasopressin in vasodilatory shock; Hydrocortisone in vasodilatory shock; Erythropoietin in trauma and critical illness; HbA1c and permissive hyperglycemia...