5
(b) Smoking cigarettes increases the risk of lung cancer.
Look at the graph.
It shows the risk of lung cancer in men who have stopped smoking. 12 11 10 9 8 percentage risk of lung cancer
7 6 5 4 3 2 1 0
non-smoker 30 years
40 years
50 years
60 years
age at which men stopped smoking
(i) Estimate the risk of getting lung cancer for men who stop smoking at the age of 55 years. ...................................................... % [1]
(ii) Stopping smoking reduces the risk of getting lung cancer. Anti-smoking campaigns aimed at people under 30 will have the biggest effect on reducing lung cancer. Explain why. ........................................................................................................................................... ........................................................................................................................................... ...................................................................................................................................... [2]
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