This volume details the impact of aging on biological system and to understand the basis of this diversity with the goal of elucidating mechanisms to optimize health. Chapters guide readers through different animal models and methodologies to examine aging at the organism, tissue, cellular, and molecular levels across the lifespan. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls.  Authoritative and cutting-edge,  Aging: Methods and Protocols aims to ensure successful results in the further study of this vital field.