The first essential of life is the maintenance of the internal environment of the cell, and this is achieved by complex regulatory mechanisms in which food nutrients play a major role. It supplies the energy required for the work done by the individual and also for growth and reproduction. The constant synthesis of tissues taking place during periods of growth and even in the fully grown adult requires the supply of the basic building materials such as monosaccharides, fatty acids, amino acids, minerals and vitamins. Food nutrients not only control the growth, development and physiological...