Coffee may cut liver cancer risk
Drinking coffee may help reduce the risk of liver cancer for heavy drinkers, concludes a new study by the World Cancer Research Fund International in London.
Researchers analyzed 34 studies involving 8.2 million people, of which 24,500 had liver cancer. Coffee and its extracts have been previously shown to reduce inflammation in genes and this latest research found that these effects may be most significant in the liver. Some evidence shows coffee consumption can also reduce DNA damage in blood cells. Overall, the study found drinking one cup of coffee per day could reduce liver cancer risk by 14 percent. Research has shown that consuming three or more alcoholic drinks a day can lead to liver cancer.
The study has some limitations. There was no evidence indicating which specific components of coffee contributed to the decline in risk. It is also not clear how other variables within coffee—milk, sugar, caffeine—influenced the association between drinking coffee and reducing liver cancer risk. Lastly, the mechanisms that support these findings were largely based on studies with mice, although some human studies were used as well.