Carbohydrates provide energy and are made up of sugars like glucose, fructose, starch and cellulose. They lack energy leads to lack of energy. Proteins are needed for growth, repair of tissues, enzymes and antibodies. They are made up of amino acids. Lipids provide long-term energy storage and insulation and are made up of fatty acids and glycerol. Vitamins and minerals are required in small amounts daily for bodily processes but cannot be stored if unused. A balanced diet with sufficient amounts of each food group is needed to prevent malnutrition as each group provides nutrients for specific tasks.