Nanotechnology in medicine involves using nanoscale materials and devices to diagnose, treat, and prevent diseases. **Nanoparticles** can deliver drugs directly to targeted cells, increasing treatment effectiveness while minimizing side effects, particularly in cancer therapy. **Nanodevices** enable early disease detection through improved imaging techniques and nanosensors that detect biomarkers in real-time. Nanotechnology is also used to create **nanobots** for minimally invasive surgeries and tissue repair. Additionally, nanomaterials aid in developing better prosthetics, wound dressings, and antimicrobial coatings. This technology revolutionizes medicine by enhancing precision, reducing risks, and improving patient outcomes in various treatments and diagnostics.