Nanomedicine uses engineered nanoscale devices and structures to monitor, repair, and control human biological systems at the molecular level. In the past, ancient practices like Ayurveda unknowingly utilized nanotechnology through techniques like Bhasma which reduced particle sizes. Currently, nanomedicine enables targeted drug delivery, nanosurgery, tissue engineering and nanodiagnostics. The future may see further development of nanotherapeutics, gene editing using CRISPR, and integration of nanotechnology with the human body through devices like brain chips.