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.

Lesson details

Key learning points

  1. Not consuming a balanced diet can lead to ill health.
  2. Body mass index (BMI) is calculated from a person’s height and body mass.
  3. Consuming too much food can cause BMI to become too high, and lead to obesity.
  4. Effects of obesity on the human body.
  5. 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).

Lesson video

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6 Questions

Q1.
Which foods should be limited in a balanced diet?
Correct answer: crisps
Correct answer: fizzy drinks
fruit
vegetables
Q2.
Which nutrients provide energy?
Correct answer: carbohydrates
Correct answer: fats
proteins
vitamins
Q3.
Joules is a measurement of in our food.
Correct Answer: energy, Energy
Q4.
Put these BMI categories into order of increasing size.
1 - Underweight
2 - Healthy weight
3 - Overweight
4 - Obese
5 - Severely obese
Q5.
There are kcal in a 100 ml of this orange juice.
An image in a quiz
Correct Answer: 40
Q6.
There are kJ in a 100 ml of this orange juice.
An image in a quiz
Correct Answer: 172

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
Correct answer: Between 30 and 39.9 = obese
40 or more = severely obese
Q2.
We calculate BMI using the equation body ÷ (height)²
Correct Answer: mass, Mass
Q3.
Which types of food are linked with obesity?
apples
Correct answer: crisps
Correct answer: chocolate
Correct answer: fizzy drinks
pasta
Q4.
Which instrument can you use to measure body fat as an alternative to BMI?
Correct answer: callipers
Thermometer
Bathroom scales
Q5.
Which one of these is not linked to obesity?
Diabetes
Heart disease
Correct answer: Low blood pressure
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.
Correct Answer: Coronary, coronary