function of protein

• protein is a very important macronutrient in the diet
• protein is needed by the body in larger amounts (grams)
• protein is essential for: growth and repair, the maintenance of good health and making enzymes, hormones and other body chemicals
• proteins can also be used as a form of energy source, for instance 1g of protein provides 4kcal of energy
• protein is essential for growth of body cells such as muscles, hair and nails
• protein is essential for repairing body cells and tissues after illness or injury
• protein is essential for maintenance eg the production of hormones, enzymes and antibodies