The term 'Daily Nutritional Requirement' refers to the amount of essential nutrients that an individual needs to consume on a daily basis in order to maintain good health. IRON is one of these essential nutrients, and it can be found in foods such as red meat, poultry, fish, beans, lentils, and fortified cereals. IRON is important for the production of hemoglobin, which carries oxygen throughout the body. Without adequate IRON intake, individuals may experience fatigue, weakness, and anemia.