Year 9 - Science
Lifestyle diseases
Disease and drugs
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit explores the human gas exchange system, focusing on the impact of exercise, asthma, smoking, recreational drugs, and the differences between infectious and non-infectious diseases. It emphasises understanding scientific methods, evidence, risk evaluation, and peer review importance.
Lesson Summary
You will learn to describe some common lifestyle diseases, factors that increase the risk of developing them, and steps you can take to help prevent them.
Key Notes
- Some lifestyle factors affect the risk of developing non-infectious diseases of the gas exchange and circulatory system.
- Eating an unbalanced diet and not getting enough exercise can increase the risk of developing lifestyle diseases.
- Smoking, drinking alcohol and using drugs can increase the risk of developing lifestyle diseases.
- To prevent lifestyle diseases people can exercise, eat a balanced diet, not smoke and avoid drinking alcohol.
Vocabulary To Learn
- risk: Something that increases the chance of something harmful happening.
- non-infectious disease: A disease that cannot be passed from one organism to another.
- lifestyle factor: This is something a person can do that will affect their health.
- lifestyle disease: A type of non-infectious disease. The risk of it developing is affected by lifestyle factors such as diet and exercise.
Common Mistakes To Avoid
- All fat in the diet should be excluded.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
Some lifestyle factors affect the risk of developing non-infectious diseases of the gas exchange and circulatory system. Eating an unbalanced diet and not getting enough exercise can increase the risk of developing lifestyle diseases.
2. Define this scientific word and use it in context. 'risk'
Something that increases the chance of something harmful happening. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: All fat in the diet should be excluded. Correction: Fat is vital for a healthy balanced diet. Unsaturated fats from plants help to build cell membranes.
More Lessons In This Unit
Browse all guides in the Year 9 Science guide library.