The endocrine system plays a crucial role in maintaining homeostasis through the regulation of hormones that influence nearly every physiological process. Disruptions in this system can lead to complex health conditions requiring accurate assessment, precise clinical judgment, and evidence based nursing interventions. By mastering the principles presented in this book, readers are expected to develop a stronger foundation in understanding endocrine pathologies and applying appropriate nursing care that is holistic, rational, and grounded in scientific evidence.