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Health of the Nation

Lifestyle factors and life expectancy

  • 3 things to know
  • AS 2

Overview

Life expectancy and healthy life expectancy, how inactivity, smoking, diet, alcohol, stress and sleep affect it, deprivation in the UK and why lifestyle diseases matter more now.

What you need to know

Answer each one before you reveal it.

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Key term

How do physical inactivity and smoking each affect life expectancy?

Key term

What is healthy life expectancy, and how does deprivation affect life expectancy in the UK?

Key term

What is life expectancy?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is life expectancy?

    Model answer

    Life expectancy is the average number of years a person can expect to live, based on current death rates. Life expectancy is a key measure of a nation's health.

  2. 2

    How do lifestyle factors affect an individual's life expectancy?

    Model answer

    Unhealthy habits such as smoking, poor diet, inactivity and heavy drinking raise the risk of heart disease, cancer and diabetes. Heart disease, cancer and diabetes all shorten life expectancy.

  3. 3

    How does physical inactivity affect life expectancy?

    Model answer

    Inactivity raises the risk of heart disease, stroke, Type 2 diabetes and some cancers. Regular activity is linked to a longer, healthier life.

  4. 4

    How does smoking affect life expectancy?

    Model answer

    Smoking damages the lungs, heart and blood vessels and causes many cancers. Long-term smokers lose on average about ten years of life.

  5. 5

    How does diet affect life expectancy?

    Model answer

    A diet high in saturated fat, salt and sugar raises the risk of obesity, heart disease and diabetes. A balanced diet with plenty of fruit and vegetables lowers that risk.

  6. 6

    How does excessive alcohol affect life expectancy?

    Model answer

    Heavy drinking damages the liver and heart and raises the risk of several cancers. Alcohol also contributes to accidents and violence.

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AThe target heart rate is about 168 bpm.
BMaximum heart rate is 220 − 18 = 202 bpm.
CThe working is 0.75 × (202 − 65) + 65 = 167.75 bpm.

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