"Dr Varuna Aluvihare, a consultant hepatologist at King's, said says fat induced liver disease has overtaken alcohol and viral infections as the commonest cause of liver disease in Europe and North America"
http://news.bbc.co.uk/2/hi/health/7169596.stm
Or this "The most common cause of liver disease is non-alcoholic fatty liver disease (‘fatty liver’). Cirrhosis is the end-result of many liver conditions and involves severe scarring of the liver (with liver nodule formation). It is associated with a progressive decline in liver function resulting in liver failure.