Colon cancer risk: Data about the relation between carrots and colon cancer risk was provided by a pooled analysis of 11 cohorts (29), and 2 additional cohorts (1, 25). No associations were found, but RRs decreased with increasing levels of consumption in the pooled analysis.
Rectal cancer risk: Data about the relation with rectal cancer risk was provided by 5 cohorts (1, 6, 9, 25). No associations were found.
Colorectal cancer risk: Data from articles about 2 cohorts was not stratified by cancer site (though information about colon cancer was used by the pooled analysis). No association was found in both cohorts (17, 23).
Mortality: Data about colorectal cancer mortality was provided by 2 cohorts. A protective effect against colon cancer mortality among both men and women was found in one cohort, but no information was provided about the strenght and significance of the association, and no adjustments for possible confounders were made (7). No other significant associations were found (22).

Conclusion: No associations with cancer risk were found consistently. When cancer mortality is considered the end point, findings are inconclusive and based on little data. No evidence was found for an association between carrots and colorectal, colon, or rectal cancer.

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