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The Importance of a Healthy Diet

In this worksheet, students will be tested on their understanding of what makes up a healthy diet and why.

'The Importance of a Healthy Diet' worksheet

Key stage:  KS 3

Curriculum topic:   Biology: Structure and Function of Living Organisms

Curriculum subtopic:   Nutrition and Digestion

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

Healthy Diet plate 

A balanced diet is essential in keeping us healthy and providing our bodies with all the things that it needs in order to function properly. The foods that we eat contain a mix of seven nutrients that are used in our bodies for different things.

 

Butter

1. Fats (found in butter and oils etc...) 

 

Fats are needed in the body to provide energy. They are also used to provide insulation to keep the body warm. 

 

 

Plate of raw meat

2. Proteins (found in meats, fish and eggs)

 

Proteins are needed in the body for growth and repair. Muscles, bones, hair, nails and blood all need proteins to keep them strong and healthy.


 

Carbohydrates

3. Carbohydrates (found in bread, pasta, cereals, and potatoes)


Carbohydrates are needed in the body to provide energy.

 

 

Vegetables and fruit

4. Vitamins (found in dairy products, fruit and vegetables) 

 

Vitamins are needed in small amounts to keep our bodies functioning properly e.g. Vitamin D is needed for healthy teeth and bones and Vitamin C is needed for healthy skin and hair.

 

 

Milk

5. Minerals (found in milk, liver, and salt) 

 

Minerals are needed for a variety of bodily functions. Some important minerals are iron, a major component of blood, and calcium, needed for healthy teeth and bones.

 

 

Bran flakes

6. Fibre (found in bran) 

Fibre is needed to keep the gut healthy and to prevent constipation.

 

 

Water

7. Water

 

Approximately 70% of the human body is made up of water; however this water can be lost through sweating and breathing, so we need to keep topping it up. 

 

 

What happens if we do not have a balanced diet? 

If our diet lacks any of these seven nutrients it can cause a variety of health problems to arise, including:

  • Anaemia, a condition caused by a lack of the mineral iron in the body.
  • Scurvy, a disease caused by a lack of vitamin C in the body.  
  • If the body becomes fat-deficient it can stop absorbing certain vitamins causing tiredness and poor health. 

Which of the following are NOT one of the 7 nutrients that we need as part of a healthy balanced diet?

 

Tick all the boxes you agree with.

fat

vitamins

carbon dioxide

water

protein

amylase

minerals

bile

carbohydrates

fibre

Which of the following nutrients is needed in the body for growth and repair?

fats

carbohydrates

proteins

fibre

Can you match up the correct foods with the nutrients they provide us with?

Column A

Column B

fats
vegetables
proteins
meat
carbohydrates
bread
vitamins
butter

Anaemia is a condition that can occur when there is a lack of what in the body?

carbohydrates

water

minerals

fat

Which of the following is needed for healthy teeth and bones?

oxygen

carbohydrates

calcium

fat

Water is extremely important in keeping the body healthy. Approximately how much of the human body is made up of water? 

10%

35%

70%

98%

The water in our bodies can be lost through a variety of ways. Which of the following options are ways in which water can be lost from the body?

sweating

washing

drinking

breathing

eating

urinating

Which of the following nutrients are needed to provide the body with energy?  

carbohydrates

proteins

fibre

water

vitamins

fats

minerals

Scurvy is a disease caused by the lack of which nutrient in the diet?

fats

proteins

minerals

vitamins

In the answer box below, write the word which fills in the gap in the sentence:

 

Meats, fish and eggs are all foods that are high in ________________?

  • Question 1

Which of the following are NOT one of the 7 nutrients that we need as part of a healthy balanced diet?

 

Tick all the boxes you agree with.

CORRECT ANSWER
carbon dioxide
amylase
bile
EDDIE SAYS
The 7 nutrients essential for a healthy diet are fats, carbohydrates, proteins, vitamins, minerals, fibre and water.
  • Question 2

Which of the following nutrients is needed in the body for growth and repair?

CORRECT ANSWER
proteins
EDDIE SAYS
Proteins are needed for growth and repair. In fact, our bodies are actually built with proteins! When we eat foods high in protein, that is converted into organs like muscle and skin.
(Fats and carbohydrates provide the body with energy and fibre is needed to keep the gut healthy.)
  • Question 3

Can you match up the correct foods with the nutrients they provide us with?

CORRECT ANSWER

Column A

Column B

fats
butter
proteins
meat
carbohydrates
bread
vitamins
vegetables
EDDIE SAYS
Foods like bread, pasta and cereal contain the carbohydrates we need to give us our daily dose of everyday energy for all the stuff we do. Foods like butter, bacon, cream and so on contain fats which act as a store of energy for when we're running low. Meat, nuts, eggs and so on are high in protein, which actually builds our structure and then veg and fruit are high in vitamins which we need in tiny quantities but without which we suffer severe problems.
  • Question 4

Anaemia is a condition that can occur when there is a lack of what in the body?

CORRECT ANSWER
minerals
EDDIE SAYS
Anaemia is a result of a lack of iron in the body. Iron is a vital component of the blood as it carries our oxygen. That means that if you're low on iron, your ability to get oxygen to where it's needed is reduced. This lack of iron leaves the anaemia-sufferer lacking energy, very tired and with pale skin.
  • Question 5

Which of the following is needed for healthy teeth and bones?

CORRECT ANSWER
calcium
EDDIE SAYS
Calcium is a mineral that the body needs to keep teeth and bones healthy. Foods like milk and bread have a good amount of calcium in them and we also need vitamin D in order to be able to extract the calcium from our diet. Our bones and teeth are made of a material which needs calcium atoms in its structure, which is why calcium is so vital to them.
  • Question 6

Water is extremely important in keeping the body healthy. Approximately how much of the human body is made up of water? 

CORRECT ANSWER
70%
EDDIE SAYS
The amount of water in the human body varies with age, sex and weight however the average percentage of water in the body is 70%. Here's a little task for you: try to find out 5 or 6 definite tasks the water does in your body. After all, if more than two-thirds of you is made of water, it must do something (and "to drink" or "not drying up" don't count!).
  • Question 7

The water in our bodies can be lost through a variety of ways. Which of the following options are ways in which water can be lost from the body?

CORRECT ANSWER
sweating
breathing
urinating
EDDIE SAYS
The main loss of water from the body occurs through sweating, breathing and urinating. Why would you need to LOSE water if you're mainly water? Well, urinating removes substances from respiration/digestion that we don't need and sweating is important in maintaining a correct temperature. Breathing loses water along with CO2 as the surface of our lungs, etc. is moist. All this lost water needs to be replaced which is why you get thirsty.
  • Question 8

Which of the following nutrients are needed to provide the body with energy?  

CORRECT ANSWER
carbohydrates
proteins
fats
EDDIE SAYS
Whilst carbohydrates provide our everyday energy, the fats we eat store extra energy away and the proteins we're built with contain energy (but those would only be used to stay alive in dire situations). Having said that, all over the world, children are living in situations where even their proteins are used to keep them alive which is why they're so appallingly thin.
  • Question 9

Scurvy is a disease caused by the lack of which nutrient in the diet?

CORRECT ANSWER
vitamins
EDDIE SAYS
Hopefully this one is well-known to you. Scurvy was a scourge of the sailors of centuries ago when their teeth fell out and their skin became blistered on long voyages. It was discovered that carrying fresh fruit, like lemons, could correct this. We now know that it is the Vitamin C in fruit and veg that keeps skin and gums healthy.
  • Question 10

In the answer box below, write the word which fills in the gap in the sentence:

 

Meats, fish and eggs are all foods that are high in ________________?

CORRECT ANSWER
protein
proteins
EDDIE SAYS
It's important to learn basic foods that are high in nutrients, like proteins. That's not because you need that knowledge just to do well in exams, but you need that knowledge for LIFE! It's called life-learning!
---- OR ----

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