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We have a balanced diet when we have the correct amount of each of the seven food groups.
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CARBOHYDRATES
PASTA, BREAD, RICE
ENERGY- carbohydrates are used to produce energy inside all of your body cells.
we ingest starch in food that we eat, the starch is broken down into glucose
Glucose is used immediatel in the reaction of respiration to give us instant energy
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PROTEINS
MEAT, FISH, EGGS
BUILDING AND REPAIRING CELLS.
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LIPIDS
LARD, EGG YOLK, SPREADS
ENERGY- fats are used to produce energy in cells good for storage.
in small amounts for - insulation, protection and energy.
larger amounts = obesity or heart disease.
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FIBRE
FRUIT AND VEG
PREVENTS CONSTIPATION
keeps food moving and can lower the risk of bowel cancer.
stimulates the gut and prevents constipation.
helps prevent diabetes
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MINERALS
A) CALCIUM
MILK AND CHEESE
STRENGTHENS OUR TEETH AND BONES.
PREVENTS RICKETS
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B)IRON
MEAT AND EGGS
we use iron to build a protein called haemoglobin.
PREVENTS ANAEMIA.
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VITAMINS
A) VITAMIN C
ORANGES, KIWI, CITRUS FRUIT.
HELPS OUR CELLS STICK TOGETHER.
PREVENTS SCURVY
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B) VITAMIN D
FULL FAT MILK, CREAM, EGGS
HELPS OUR INTESTINES ABSORB CALCIUM
PREVENTS RICKETS
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WATER
ALL FOODS
PREVENTS DAMAGE TO YOUR CELL-water is needed for chemical ractions in cells
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Explain why an office workr with an average daily intake of 20,000KJ is likely to be overweight.
The person is taking in more energy than they are using. This extra is stores as fat.
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STARVATION- a condition when you have very little or no food at all.
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MALNUTRITION- when we get enough energy from what we eat but some major food groups are absent from our diet.
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