This book explores the groundbreaking impact of low-level laser therapy (LLLT) on human blood parameters. It provides a clear and detailed investigation into the non-invasive technique, highlighting the remarkable effects of low-intensity lasers on biological processes. Focusing on both normal and anaemic red blood cells, the study examines how green and blue laser irradiation can induce significant changes in various blood parameters.  Beyond surface-level observations, the study delves into red blood cell viability and morphology, offering valuable insights into the diverse effects of LLLT on different blood conditions. This will be an essential guide for researchers and medical professionals interested in unlocking the therapeutic potential of LLLT in blood-related disorders. By dissecting biological responses and morphological shifts in blood cells, this book propels the understanding of LLLT applications in this dynamic and evolving field.