We never consider soft drinks, ice cream, chocolate or chips as health foods. But they can now be to be marketed as ‘health’ foods by reducing fat, carbohydrate or calorie content or by increasing protein, fibre or vitamin content with the help of nanotech.. Nanotechnology enables the production of stronger flavorings, colorings, and nutritional additives, and processing aids to increase the pace of manufacturing, and to lower costs of ingredients and processing and development of foods capable of changing their colour, flavour or nutritional properties according to a person’s dietary needs, allergies or taste preferences.Nano based packaging have been developed to help increase food shelf life by detecting spoilage, bacteria, or the loss of food nutrient, and to release antimicrobials, flavours, colours, or nutritional supplements in response.