Nutraceuticals are defined as components purified from foods which have health benefits besides their actual function of providing nutrition and used to prevent the occurrence of a disease or are used in its treatment. Nano science and nanotechnology have immense applications in diverse fields of science including electronics, communication, energy production, medicine and the food sector. It is considered that nanotechnology has the substantial potential to revolutionize agriculture and food systems. Beneficial effects in improving the immunity to treat several disorders like cancers, cardiovascular and neurodegenerative disorders like Alzheimer's disease. The efficient encapsulation of nutraceuticals, their smart delivery and sustained release from the Nano formulation are few of the emerging challenging topics of nanotechnology in food and agriculture sector.