Balanced diet

• Carbohydrates

  Made from carbon, hydrogen and oxygen. They are the body's main fuel (glucose)
• We get most of the carbohydrates in our diet from starch
• Starch


  An insoluble molecule
• Carbohydrate sources


  • Potatoes
  • Pasta
  • Rice
• A balanced diet is one that contains all the nutrients needed by your body to stay healthy.
• The main food groups are carbohydrates, proteins, fats, vitamins and minerals
• Carbohydrates - sugars, starches and fibre found in foods such as bread, rice, pasta, potatoes, fruit and vegetables
• Lipids

  Molecules made from carbon, hydrogen and oxygen, with 3 fatty acids and glycerol. They form an essential part of the structure of all cells.
• Lipids

  • Fat is deposited in certain parts of the body as a long term store of energy
  • Lipids are made from glycerol
• Lipids

  • Fish
  • Cheese
  • Oil
  • Fried food
  • Margarine
• There are fat around organs for protection
• Protein

  all cells contain protein

  proteins are polymers. Many compounds in the body are made from proteins. Elements: hydrogen, carbon, oxygen and nitrogen (sulfur) + amino acids. Examples: beans, peas, meat and fish
• Minerals

  Iron is part of the haemoglobin in red blood cells which carry oxygen.

  calcium helps make teeth and bones
• Vitamin A

  It makes a chemical in the retina and protects the surface of the eye.

  examples are fish liver oils, butter and carrots
• Vitamin C

  They stick together cells lining the surfaces such as the mouth

  some examples are fruit and vegetables
• Vitamin D

  is made in the sunlight and helps bones absorb calcium and phosphate. Some examples are fish liver oils