*5 stars* "...comprehensively covers the topic by first addressing the normal physiology of insulin, including biosynthesis, physiologic actions, and nonclassic actions. [Also] cover the role of insulin in diseases in states of excess and resistance, as well as treatment approaches.... [U]seful to all levels of learners including medical students, residents, fellows, and attending physicians as it provides an overview of insulin that would be beneficial to any level of medical learner.... [D]oes an excellent job of first giving a very in-depth overview of the basic biosynthesis and physiology of insulin - which provides the reader with the necessary basis to move forward into the pathophysiology chapters.... [U]ses frequent historical contexts and origin stories which were a nice way to engage by providing context.... [A]n excellent reference, especially for use when coming across patients with gray-area or complex diabetes." --©Doody’s Review Service, 2024, Prathayini Subarajan, DO (Loyola University Stritch School of Medicine)