The prime objective of this book is to provide a clear explanation of the operation of the system for estimation of body composition using Bioelectrical Impedance Analysis technique. The content of this book has been written in a style for self-understanding to everyone. The book covers the detailed structure and design of system for estimation of body composition using Bioimpedance analysis system. Efforts have been made to present an integrated treatment with sufficient depth of each block of this system. Each chapter begins with rudimentary concepts and is so developed that beginners can easily comprehend it. The book provides students a platform to build confidence and harness their skill in the field of electronics and biomedical signal processing. With its wide coverage, the book would serve as an excellent platform for project based learning.