what is a balanced diet

Define 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 Monday, 30 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

4. Carbohydrates Bread Pasta Rice Potato Wheat Carbs are needed to release energy

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

10. Water Water is needed to stop the body dehydrating and maintain fluid levels

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. 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.

14. 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 .

15. 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)

16. Version 2.0 Copyright © AQA and its licensors. All rights reserved. B1.1 Diet and Exercise : Evaluating slimming claims BL1FP June 2012 Past Paper Question

17. 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 . How many grams of carbohydrate did the child eat ? (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. 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

18. Mark scheme

19. Homework T ake 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

20. Why do people’s energy needs vary?

21. 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!

22. 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.

23. What factors affect metabolic rate?

24. Factors affecting metabolic rate Age Gender Inherited factors Body size / weight Exercise levels Proportion of muscle to fat Pregnancy

25. 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

26. ( 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

27. (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) 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

28. Mark scheme

29. 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