Nutrition Lesson Objectives To understand why our bodies need food To learn about the different nutrients and vitamins our bodies require Why do we need food? We need to eat food for lots of different reasons: For energy to live, move and survive
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We need to eat food for lots of different reasons:
For energy to live, move and survive
To grow, and to repair damaged cells and tissues in our
To keep warm
To prevent diseases
Energy comes from the fat, carbohydrate, protein and
alcohol that food and drink contains.
Found in all food in differing amounts
Different people need different amounts of energy.
Energy is needed by the body to stay alive,
grow, keep warm and be active
Protein is needed for growth and repair of the body
It is also a source of energy. 1g of protein provides 4 kcal
Different foods contain different amounts and
combinations of amino acids
(the building blocks of proteins).
The amount of protein we need changes during
The main sources include meat, fish, eggs, milk,
cheese, cereals and cereal products
(e.g. bread), nuts and pulses (peas, beans and lentils).
Fat provides energy; 1 gram provides 37 kJ (9 kcal).
All fats contain both saturated and unsaturated
fatty acids but are sometimes described as ‘saturated’
or ‘unsaturated’ according to the proportions of fatty
Butter is often described as a ‘saturated fat’,
while most vegetable oils are described as ‘unsaturated fats’
Fat provides essential fatty acids.
It is a carrier of fat-soluble A, D, E and K and is necessary
for them to be absorbed in to the body
Fat is needed for health but only in small amounts.
No more than about one third of our energy intake should come
There are 2 main groups of carbohydrate - starch and sugars
The main sources of carbohydrate include starchy foods,
such as cereal, pulses and potatoes and foods and drinks
containing sugars such as milk, fruits and vegetables, jam,
confectionery, table sugar and some soft drinks.
Sugars are called simple carbohydrates.
They are called simple because your body digests them
quickly and easily.
Starchy Carbohydrates are called Complex carbohydrates.
These carbohydrates take longer to be digested than simple
Carbohydrates provide a source of energy -Glucose, Glycogen
Vitamins are needed in very small amounts for many of the
processes carried out in the body
Vitamins are found in small amounts in many foods and can
be put into two groups:-
Fat soluble vitamins and Water soluble vitamins
Dietary fibre is found in cereal foods, beans, lentils,
fruit & vegetables
Dietary fibre is not digested by the body.
It is the parts you cannot eat of fruit, vegetables, cereals,
beans and pulses
Fibre is important as it adds bulk to the diet and this helps
food travel along the digestive system more quickly
helping us to go to the toilet
Do you eat a variety of different foods?
Do you eat the right amount to be a healthy weight?
Do you eat plenty of foods rich in starch and fibre?
Do you eat plenty of fruit and vegetables?
Do you eat too many foods that contain a lot of fat?
Do you have sugary foods and drinks too often?
Do you eat too much salt?
DISSOLVE IN FAT - STORED IN THE BODY
WATER SOLUBLE VITAMINS
DISSOLVE IN WATER – LEAVE THE BODY QUICLKY