Smoking causes more than 4 in 5 cases of lung cancer. Lung cancer has one of the lowest survival rates of all cancers, and is the most common cause of cancer death in the UK.
Smoking also increases the risk of at least 13 other cancers including cancers of the mouth, pharynx (upper throat), nose and sinuses, larynx (voice box), oesophagus (gullet or food pipe), liver, pancreas, stomach, kidney, bowel, ovary, bladder, cervix, and some types of leukaemia Smoking could increase the risk of breast cancer, but any increase in risk is likely to be small.