This book emphasizes the significance of merging nanomedicine with developmental biology concepts to comprehend the pathogenesis and find the cure for various complex diseases. It showcases the fascinating intersection of these two rapidly advancing fields, offering great potential for collaborative advancements in healthcare and science. This book comprises of two main sub-sections; Section A: Recent Advancements in Developmental Biology to Understand the Pathogenesis of Various Diseases. This section delves into the advancements in the field of development biology, aiming to comprehend the development and pathogenesis of diverse diseases like osteoarthritis, osteoporosis, cancer, and neurodegenerative disorders. This book also discusses the significance of the confluence of development biology and nanotechnology in tissue engineering. There are several graphical and pictorial illustrations in all the chapters so that the readers can grasp the essence of the topic and have a seamless reading experience. Section B: Smart nano-drug delivery therapy is an emerging therapeutic approach. This section delves into the application of the nanoparticulate drug delivery system, aligned with the insights of development biology, to treat a variety of disorders, such as arthritis and cancer. This section also discusses the importance of CRISPR/Cas9 in diagnosis and treatment, as well as the future of the convergence of nanomedicine and developmental biology. The contributing authors are from different countries and scientific domains, thereby providing this book with a comprehensive global perspective.