Module B3- Living and growing
- Created by: DemiRudd
- Created on: 11-03-16 10:38
Nutrients
- Carbonhdrate
- Proteins
- Lipids (fats and oils)
- Minerals
- Vitamins
- Fibres
- Water
A nutrient is a substance needed by organisms to stay alive and healthy. A healthy human diet involves seven different kinds of nutrient:
Nutrient
Use in the body
Good sources
Carbohydrate
To provide energy
Cereals, bread, pasta, rice and potatoes
Protein
For growth and repair
Fish, meat, eggs, beans, pulses and dairy products
Lipids (fats and oils)
To provide energy. Also to store energy in the body and insulate it against the cold.
Butter, oil and nuts
Minerals
Needed in small amounts to maintain health
Salt, milk (for calcium) and liver (for iron)
Vitamins
Needed in small amounts to maintain health
Fruit, vegetables, dairy foods
Dietary fibre
To provide roughage to help to keep the food moving through the gut
Vegetables, bran
Water
Needed for cells and body fluids
Water, fruit juice, milk
Energy needs
Each person needs a different amount of energy depending on factors such as:
- gender (male or female)
- age
- amount of daily activity
If you look on the side of food packets you will see the food's energy content. This is usually measured in kilojoules, kJ. For example, a one-year-old baby needs 3850 kJ each day to continue to grow, whereas an adult Olympic swimmer in training needs 15,600 kJ each day. Someone who sits at a desk all day will need less food than their twin who climbs ladders all day to wash windows.
Too thin, too fat
If the amount of energy you get from your food is different from the amount of energy you need, your diet will be imbalanced:
- Too little food you eat may cause you to be underweight
- Too much…
Comments
No comments have yet been made