This presumption may be premature, report the authors.
Paul Terry and colleagues examined data from over 61,000 Swedish women aged 40-74 years - the largest number of cases than any previous study of coffee consumption and colorectal cancer.
All women were free from cancer at the start of the analysis, with a wide range of coffee consumption. Details of many other dietary factors were also taken into account.
|61,000 women were included in the study.|
During an average of 9.6 years of follow-up, the team found no association between coffee consumption and colorectal cancer risk.
Regular consumers of four or more cups of coffee per day showed no decreased risk of colorectal cancer, compared with those who rarely or never drank coffee.
In further analysis, they found no evidence that the association with coffee consumption varied with age, body mass index, or various other dietary factors.
Increasingly, the public is aware of the potential role of dietary factors, such as coffee, in disease processes, say the authors.
They conclude, "For patients seeking advice about coffee consumption, the evidence suggests that moderate or even high consumption will not likely influence the risk of colorectal cancer."