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8Aa - Nutrients in food
9
Food and Nutrition
Nutrients in food
Why do we need to eat?
Why do we need food?
There are three reasons
Discuss with the person next to you
Can you get all three?
Why do we need to eat?
1. Energy
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Food gives us energy.
We use molecules in the food like a car uses petrol.
The energy is measured in Calories (or KiloJoules).
What happens if you eat more or less energy than you need?
2. Growth and Repair
The molecules in food are used to make new cells and repair damaged cells.
If you don't eat the right food you wont grow and your body will become damaged
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3. Health
Molecules in food help with many important jobs in the body such as seeing, digesting food, and fighting diseases
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Food is made of a few main parts
What are the main nutrients in food
Find out what each of these is for and write them in your book:
Carbohydrate
Protein
Fat
Fibre
Vitamins and minerals