Information > Cancer Incidence

Proportion of cancer deaths attributed to different factors:

 Rank   Factors / Classes of Factors   % of All Cancer Deaths 
1 Nutrition 35
2 Tobacco 30
3 Infection 10
4 Reproductive & Sexual Behaviour 7
5 Occupation 4
6 Alcohol 3
7 Geophysical Factors 3
8 Pollution 2
9 Medicine & Medical Procedures 1
10 Food Additives < 1
11 Industrial Products < 1
12 Unknown 3 - 4

Source: Doll and Peto, 1981