Looking at the diverse applications of nanotechnology in the healthcare field, the chapter authors discuss its importance in drug delivery, biomedical imaging and medical diagnostics, and healthcare management. The volume emphasizes how nanomedicine can treat different types of cancers and can improve medical imaging for the diagnosis of different kinds of diseases, resulting in quicker and more accurate diagnosis and better treatment options. The volume delves into nanobiotechnology in plants and its application in nanofertilizers and nano-pesticides in agriculture. It also documents how agri-nanobiotechnology can be a tool for innovative green technology that can be applied for global food security, biodiversity, and climate change solutions. The themes of nanobiotechnology in medicine and in plants are merged in the chapter on the types and therapeutic effects of plant product-based nanomedicine for malignancies. The potential toxicity of nanoparticles in plants is also elucidated. This volume provides an insightful overview of nanobiotechnology in medicine and in plants and agriculture that will be valuable for researchers and scientists and faculty and students in the areas of nanobiotechnology, agriculture, plant molecular biology, and medicine and healthcare.