Biosynthesized nanoparticles have increasingly drawn attention in the scientific community, especially in biomedical fields. This growing interest stem from a wide range of studies highlighting their remarkable advantages, including biocompatibility, eco-friendly production, and functional versatility. These nanoparticles show great promise in cancer-related applications; from controlled drug delivery to acting as contrast agents in imaging techniques, as well as enabling disease monitoring through electrochemical biosensors. With their natural origin and adaptable properties, biosynthesis stands out as an innovative and accessible path for developing safer, more personalized, and less invasive therapies in the future of medicine.