8Ab uses of nutrients

• When you eat food, you gain mass. When doing everyday activities, the fuel in your food is used up so you lose mass.
• The body's main source of energy is carbohydrates
• Fats are stored in your body so there is always a source of energy
• If the carbohydrates that you eat are not all used up, they can be turned into fat
• some fat is stored under your skin to insulate your body and help you stay warm
• Proteins are very important for making new cells to help us grow and repair our bodies
• • vitamin A is needed for healthy skin and eyes
  • vitamin C helps cells in tissues to stick together properly
  • calcium is needed to make bones
  • iron is used to make red blood cells