Lung cancer: risk factors

The main recognised risk factors for lung cancer are as follows:

  • Tobacco smoking - accounting for 80-90% of cases in developed countries
  • Asbestos, which interacts in a multiplicative way with smoking
  • Ionising radiation, including domestic exposure to radon
  • Various chemicals, usually encountered in occupational settings, including: arsenic, chloromethyl ethers, polycyclic aromatic hydrocarbons, chromium products and nickel.