Food with ingredient that are medically beneficial beyond their basic nutritional value are called functional food. It is similar in appearance to conventional food, consumed part of normal diet and has demonstrated physiological benefit and reduces the risk of chronic disease beyond basic nutritional function. Examples include tomatoes, broccoli, citrus fruits, leafy vegetables and many more. People are starting to look at food as a perception for health. Functional food in highest demand include those containing omega -3 fatty acid, glucosamine and probiotics.