Smoking has, by far, the largest effect on the risk of cancer, a new study has revealed.
Researchers from the Boston University Medical Center also provided considerable new information on lifestyle and environmental factors that may relate to the risk of cancer.
They found that 19.4per cent of cancer cases in the UK attributable to tobacco use.
A poor diet (less intake of fruits and vegetables and fibre and greater intake of meat and salt), obesity, and alcohol are the next most important factors that relate to cancer, with alcohol being calculated to relate to 4.0 per cent of cancer cases in the UK.
It puts into perspective the importance of targeting certain behaviours for the potential reduction in the risk of cancer.