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Natural Sciences - 9 A

- Siyavula

Carbohydrates are the main supply of energy for our bodies. They break down in our digestive system to form glucose (which is a sugar). Examples of foods that contain carbohydrates are: whole grain bread, potatoes, pasta, rice, fruit, vegetables, maize and legumes. Unfortunately many people eat too many carbohydrates, especially processed carbohydrates like sweets and biscuits, chips, pastries, soft drinks and sweetened fruit juices.
Fats and oils are important for many body processes:
• Fat protects and insulates your organs
• They help maintaining healthy hair and nails.
• Some vitamins can only be absorbed and transported when attached to fat molecules.
• Fats and oils also provide the body with energy.
However, some fats are better than others and having too much of any type is not a good idea. Vitamins help with the different chemical reactions in our bodies:
• vitamin A helps strengthen our immune system and is good for eyesight in the dark
• B vitamins help us process energy from food
• vitamin C helps to keep your skin and gums healthy and improves the immune system
• vitamin D helps to build strong bones and teeth

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