New
New
Year 8
Imbalanced diet: obesity
I can explain the effects on the human body of consuming too much food.
New
New
Year 8
Imbalanced diet: obesity
I can explain the effects on the human body of consuming too much food.
These resources will be removed by end of Summer Term 2025.
Switch to our new teaching resources now - designed by teachers and leading subject experts, and tested in classrooms.
Lesson details
Key learning points
- Not consuming a balanced diet can lead to ill health.
- Body mass index (BMI) is calculated from a person’s height and body mass.
- Consuming too much food can cause BMI to become too high, and lead to obesity.
- Effects of obesity on the human body.
- Obesity can increase the risk of developing other health issues, including heart disease.
Keywords
BMI - Body mass index (BMI) is a measure that compares your weight and height to assess whether they are in a healthy proportion.
Obesity - When someone has a BMI of 30 or above.
Coronary heart disease - A condition in which the coronary arteries become blocked.
Type two diabetes - When a person cannot control their blood sugar levels.
Common misconception
We should not eat fat.
Fat makes up an important part of our diet. We use it as a store of energy and to make cell membranes.
Try to emphasise how important it is to have fat in the diet. It is the imbalance of energy in the diet that causes weight gain. Ultra processed foods should be avoided and more wholefoods should be included.
Teacher tip
Equipment
Content guidance
- Depiction or discussion of sensitive content
- Depiction or discussion of mental health issues
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on
Open Government Licence version 3.0
except where otherwise stated. See Oak's terms & conditions (Collection 2).Starter quiz
Download starter quiz
6 Questions
Q1.
Which foods should be limited in a balanced diet?
fruit
vegetables
Q2.
Which nutrients provide energy?
proteins
vitamins
Q3.
Joules is a measurement of in our food.
Q4.
Put these BMI categories into order of increasing size.
Q5.
There are kcal in a 100 ml of this orange juice.

Q6.
There are kJ in a 100 ml of this orange juice.

Exit quiz
Download exit quiz
6 Questions
Q1.
If a woman has a BMI of 32, which weight category would that put her into?
Less than 18.5 = underweight
Between 18.5 and 24.9 = healthy weight
40 or more = severely obese
Q2.
We calculate BMI using the equation body ÷ (height)²
Q3.
Which types of food are linked with obesity?
apples
pasta
Q4.
Which instrument can you use to measure body fat as an alternative to BMI?


Thermometer

Bathroom scales
Q5.
Which one of these is not linked to obesity?
Diabetes
Heart disease
Some types of cancer
Q6.
heart disease happens when the blood vessels that supply the heart with blood get blocked with a buildup of fatty substances.