A Healthy Body

1
A Healthy Body

• Lesson 1 A healthy diet. Why food is needed, the
  different food groups and the importance of a
  balanced diet.

2
Why do we need food?

• To provide us with energy.
• To give us the materials to grow and to repair
  damaged or worn out tissue.
• To protect us against disease.

3
Different food groups

• Foods rich in fats.
• Foods rich in carbohydrates.
• Foods rich in protein.
• Foods rich in vitamins and minerals

4
Fats

• Foods rich in fats provide energy.
• The energy is used for movement, keeping warm and
  growth.
• Fatty foods butter, fried food, oils, bacon,
  sausages, cakes and biscuits.

5
Carbohydrates

• Foods rich in carbohydrates also provide energy.
• Carbohydrates can be sugary or starchy (pasta,
  bread, potatoes, rice).
• Starchy foods are better for you than sweet foods!

6
Proteins

• Protein is used for the growth and repair of the
  body.
• Foods rich in protein include meat, fish, nuts,
  eggs and beans

7
Vitamins and minerals

• Vitamins and minerals are needed in small
  amounts, for the body to work properly.
• Fresh fruit and vegetables are rich in many
  vitamins and minerals.
• A lack of vitamins and minerals may cause a
  deficiency disease.

8
Scurvy - a deficiency disease

• A lack of vitamin C in the diet can cause scurvy
  - bleeding gums, loose teeth, skin rashes and
  poor wound healing. It can be fatal.
• Vitamin C is found in fresh fruit, especially
  oranges and lemons.
• Cooking or canning destroys vitamin C.
• Scurvy used to be common among sailors on long
  voyages and polar explorers - because they
  couldnt get fresh food.

9
A balanced diet contains a mixture of foods from
all the main food groups.