After you eat food the good parts of the food (called NUTRIENTS) need to be chemically changed (digested) and then absorbed into the blood stream so we can use it for energy and growth.
Food enters the body at the MOUTH and is digested mainly in the SMALL INTESTINE
|Why we need food (summary)
|Why we need food||Type of
|Foods for GROWTH||PROTEIN||Cheese, eggs, milk|
|Foods for ENERGY||Sugar and starch
|Foods to keep us
|Vitamins and minerals||Fruit and
We need food to give us energy, help us grow and keep us healthy
Foods for growth and repair
These are foods that contain Protein
Protein is the main body building nutrient.
Examples: Meat, fish and eggs. Cheese and soya
Foods for Energy
These foods contain starch, sugar (sometimes called carbohydrate)
They supply our body with energy (just like a battery for a toy).
The energy is needed to help us grow and keep us warm
Examples: Bread, potatoes, pasta, rice, cakes and sweets
Bread, potatoes, pasta and rice give their energy slowly and may be eaten with any meal.
Cakes and sweets give their energy quickly and should only be eaten in small amounts.
(Oils and fats like butter and cream also give us energy but are not good for our heart.)
Foods to keep us healthy
These foods contain lots of vitamins and minerals
Examples: Fruit and vegetables
LEMONS contain lots of vitamin C which helps stop an illness called Scurvy which used to make sailors ill.
Vitamin C also helps with colds and ‘flu.
Milk and cheese contain lots of Calcium which is good for your bones
Spinach contains lots of Iron which is good for your blood
When people go ‘on a diet’ they normally mean a diet low in starch and sugar… which helps you lose weight.
In fact everybody has a diet .. your diet is evrything you eat
You are eating a balanced diet when you eat the correct amount of each type of food:
Lots of bread and cereals. These contain lots of fibre and are low in sugar and fat
Lots of fruit and vegetable. These are high in fibre, low in fat and salt and contain vitamins we need. Fibre helps our digestion.
Some milk and meat. Milk and meat contain protein which we need but are also high in fat
Only a small amount of sweet or fatty food which can damage our heart when older and make us fat if we don’t exercise enough.
We should also limit our salt to 6g a day. This is about a teaspoon full. A lot of cooked food, like bread, bacon or ‘ready meals’ also contain lots of salt
|We also should drink at least 2½ litres of water a day
Don’t drink it all in one go… spread it out.
Contain lots of fibre, with only a small amount of sugar, fat and salt.
Examples of healthy foods: fruit and vegetables, brown bread, brown rice
Contain lots of fat, sugar or salt and not enough vitamins or minerals.
Examples of unhealthy foods: cream cakes, chips, crisps. Even bought fruit smoothies.