This practical, pocket-sized guide presents everything that a medical student needs to know to master the biochemistry and human metabolism content for the USMLE Step 1. It is a clear concise review of these topics in an easy to understand and digestible format. Each of the five sections provides high-yield information on the essentials of carbohydrate, lipid, protein, nucleotide and vitamin metabolism, respectively, including diagrammatic figures and tables for at-a-glance referral.