Smoking increases the risk of liver cancer. Researchers estimate that almost a quarter of liver cancers in the UK are caused by smoking. In smokers who also have hepatitis C or hepatitis B virus infection the risk is increased further. Smokers who drink large amounts of alcohol may have a risk that is almost 10 times higher than people who don't smoke or drink.
Children whose parents smoked before or during pregnancy have an increased risk of a very rare type of liver cancer called hepatoblastoma.