A causal relation between alcohol and colorectal cancer was established only recently by the IARC [59]. Several meta-analyses [67-69] observed a positive linear relation between alcohol consumption and colorectal cancer. The studies provide evidence for an increased relative risk (RR) of about 10-20%for colorectal cancer with regular consumption of about 50 grams of alcohol per day, compared with abstainers. This association is similar for both colon cancer and rectal cancer [67;69].
