Smoking cigarettes is the single biggest risk factor for lung cancer. 90% of lung cancers are caused by smoking.
- Lung cancer risk factors @ Cancer Research UK
Excerpt: Tobacco smoking and environmental tobacco smoke are classified by the International Agency for Research on Cancer (IARC) as causes of lung cancer. An estimated 86% of lung cancers in the UK are linked to tobacco smoking – 83% due to active smoking, and 3% due to environmental tobacco smoke exposure in non-smokers. An estimated 86% of lung cancer deaths in the UK are causes by tobacco smoking.
Message supplied by: Alice @ Public Health, Norfolk County Council / Healthy Norwich initiative