Three cups of coffee a day could reduce the risk of liver cancer by up to 50 per cent, latest research has shown.
One study found the drink reduces the risk of the most common type of liver cancer, hepatocellular carcinoma (HCC), by 40 per cent but separate research indicated that risk could be reduced by half.
Study author Dr Carlo La Vecchia, said 'Our research confirms past claims that coffee is good for your health, and particularly the liver.'
Coffee perk: Three cups a day can reduce liver cancer by up to 50%, latest research has shown
Dr Vecchia, of the department of epidemiology, Istituto di Ricerche Farmacologiche 'Mario Negri' and the department of clinical sciences and community health, Universit` degli Studi di Milan, Italy, added: 'The favorable effect of coffee on liver cancer might be mediated by coffee's proven prevention of diabetes, a known risk factor for the disease, or for its beneficial effects on cirrhosis and liver enzymes.'
The researchers conducted a meta-analysis of articles published between 1996 and September 2012, involving 16 high-quality studies and a total of 3,153 cases.
It also included data on 900 more recent cases of HCC published since the last detailed research in 2007.
Despite the consistency of results across studies, time periods and populations, it is difficult to establish whether the association between coffee drinking and HCC is causal, or if this relationship may be partially attributable to the fact that patients with liver and digestive diseases often voluntarily reduce their coffee intake.
Dr La Vecchia, whose research was published in the journal Clinical Gastroenterology and Hepatology, added: 'It remains unclear whether coffee drinking has an additional role in liver cancer prevention.
'But, in any case, such a role would be limited as compared to what is achievable through the current measures.'
Coffee has been proven to prevent diabetes which is a known risk factor for liver cancer. It also has beneficial effects on cirrhosis and liver enzymes
Primary liver cancers are largely avoidable through hepatitis B virus vaccination, control of hepatitis C virus transmission and reduction of alcohol drinking.
These three measures can, in principle, avoid more than 90 percent of primary liver cancer worldwide.
Liver cancer is the sixth most common cancer in the world, and the third most common cause of cancer death.
HCC is the main type of liver cancer, accounting for more than 90 percent of cases worldwide.
Chronic infections with hepatitis B and C viruses are the main
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