**Selected for 2025 Doody's Core Titles® with "Essential Purchase" designation in Physiology**A favorite text of physiology students worldwide, Guyton and Hall Textbook of Medical Physiology delivers the complex knowledge you need to master in a distinctive, easy-to-digest format. The fifteenth Edition of this bestselling text is fully up to date and provides clear, comprehensive coverage of the content most relevant to clinical and pre-clinical students. The unique format ensures maximum learning and retention of complex concepts: a larger font size emphasizes core information, while supporting information is detailed in a smaller font and highlighted in pale blue—making it easy to quickly skim the essential text or pursue more in-depth study. - Focuses on core material and how the body maintains homeostasis to remain healthy, emphasizing the important principles that will aid in later clinical decision making. - Contains new information on physiology and the gut microbiome and clinically important sex differences in physiology lab values. - Presents information in short chapters using a concise, readable voice that facilitates learning and retention. - Utilizes two font sizes: a larger font for fundamentals, and a smaller font that highlights relevant integrated sciences, clinical examples, pathophysiology, or detailed mechanisms that students can read as needed. - Contains more than 1,200 full-color drawings and diagrams—all carefully crafted to make physiology easier to understand. - Includes online access to heart sounds, animations, self-assessment questions, and more.