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what is a balanced diet
1. What is a balanced diet?
Learning Objective: To define the term ‘balanced
diet’
Learning Outcomes:
Must identify the components of a balanced diet
Should describe the uses of the main food groups
in the body
Could explain why people have different energy
needs
Tuesday, 31 August 2021
2. Starter
Name all of the 7 food groups.
Can you give some examples of foods from each
group?
Extension:
What to do you think these foods are used for in
the body?
3. Food Groups Marketplace
• Step 1: Produce a poster on your food group
(You can ONLY use 10 words!)
• Step 2: Go and collect information on the
other 6 food groups
• Step 3: Return to your group and share your
information
5. Proteins
• Eggs
• Fish
• Meat
• Cheese
• Milk
Proteins are needed to help you grow
and for cell repair and replacement
6. Fats
• Butter
• Oil
• Margarine
• Natural fats eg avocado
and coconut
Fats are needed for energy & to keep you warm
7. Fibre
• Fresh fruit
• Vegetables
• Wholegrain cereal
• Wholemeal bread
• Beans
• Brown rice
Fibre is needed to aid digestion
8. Vitamins
• Fresh fruit
• Vegetables
• Egg yolk
• Cheese and milk
• Fish
Vitamins are needed to help the body
work and help concentration
9. Minerals
• Fresh fruit
• Vegetables
• Cheese and milk
• Nuts
• Wholegrain
• Wholewheat
Minerals are needed to help the body
work and help decision making
11. Task
• List each of the 7 food groups
• For each group write down some examples of
food/drink
• Write a brief description of what each group is
needed for in the body
• Extension: Write a food diary of what you ate
yesterday. Which food groups were contained in
your diet?
12. What is a balanced diet?
• http://www.bbc.co.uk/learningzone/clips/a-
balanced-diet/10609.html
13.
14. A balanced diet is…
• A diet that contains adequate amounts of all
the necessary nutrients required for healthy
growth and activity.
• A balanced diet is one that contains all the
ingredients needed for our body to healthily
continue its day to day functions in the most
efficient way.
15. The five major food groups
Carbohydrates
(for energy)
Vegetables
(vitamins, minerals & fibre for
healthy bodily functions)
Protein
(for growth and repair)
Fats, oils & sweets
(for energy)
Eating these foods in the right proportions is important for our health.
This is known as eating a balanced diet.
16.
17. What’s in your food?
Look at a selection of food labels and pick 2…
In the exam you may be asked to compare and
evaluate information about how food affects your
health.
Look at the 2 different labels and compare the
information from them
(e.g. which food provides more energy? = kJ or kcal)
19. One day a ten-year-old child ate a whole packet of the
biscuits.
The biscuits in the pack had a mass of 400 g.
1. How many grams of carbohydrate did the child eat?
(2)
2. The amount of carbohydrate you calculated in part 1
was more than the UK guideline daily amount for
the child. How much more? (1)
3. 3. Give two possible health effects on the child of
eating so many biscuits every day. (2)
• B1.1 Diet and Exercise : Evaluating slimming claims BL1FP June 2012
21. Homework
Take the role of a nutritional advisor…
Write some nutritional advice to one of the
following, outlining main food and fitness needs:
• A pregnant woman
• A top athlete
• Body builder
23. People’s energy needs vary because
of…
Who They Are!
• It is all to do with something called metabolic
rate.
• Metabolic rate is the speed at which chemical
reactions take place in the body
• We need energy to fuel these chemical reactions!
24. Metabolic Rate Continued…
Therefore, if there are more
reactions taking place (for
example, respiration) then we
need more energy! So there will be
a higher metabolic rate.
26. Factors affecting metabolic rate
• Age
• Gender
• Inherited factors
• Body size / weight
• Exercise levels
• Proportion of muscle to fat
• Pregnancy
27. Scientists measured the amount of energy used by four people, A, B, C
and D.
The scientists also measured the amount of energy taken in as food by
each person. The chart shows the scientists’ results.
• B1.1 Diet and Exercise : Evaluating slimming claims BL1FP June 2012
Past Paper Question
28. a) (i) What was the mean amount of energy used by D?
................................................................... kJ per day
(1 mark)
(ii) The amount of energy used by D is different from the
amounts of energy used by A, B and C.
Suggest two reasons why.
......................................................................................
......................................................................................
......................................................................................
(2 marks)
• B1.1 Diet and Exercise : Evaluating slimming claims BL1FP June 2012
•
29. (b) The data in the bar chart was collected over twelve months.
Which person, A, B, C or D, would gain body mass over the twelve
months? Give a reason for your answer.
...........................................................................................
...........................................................................................
...........................................................................................
(2 marks)
(c) In the UK many people are obese. Doctors advise obese people to
lose mass.
Suggest two different ways an obese person could lose mass.
...........................................................................................
...........................................................................................
...........................................................................................
(2 marks)
• B1.1 Diet and Exercise : Evaluating slimming claims BL1FP June 2012
•
31. To finish off…
True or false?
Proteins are needed to help you grow
Fish is a good source carbohydrate
Bread is a good source of carbohydrate
Eating a balanced diet means eating no fat at all
True
False
True
False
