| Factor | Percentage of cancer cases | |
|---|---|---|
| Tobacco | 19.4 | |
| Diet | 9.2 | |
| Overweight and obesity | 5.5 | |
| Alcohol | 4.0 | |
| Occupation | 3.7 | |
| Radiation (UV) | 3.5 | |
| Infections | 3.1 | |
| Radiation (ionizing) | 1.8 | |
| All environmental factors | 42.7 | |
|
Source: Data from D. M. Parkin, L. Boyd, and L. C. Walker, Fraction of cancer attributable to lifestyle and environmental factors in the UK in 2010, British Journal of Cancer 105:S77–S81, 2011. |
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