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The metabolic syndrome and risk of incident colorectal cancer.

TitleThe metabolic syndrome and risk of incident colorectal cancer.
Publication TypeJournal Article
Year of Publication2006
AuthorsAhmed RL, Schmitz KH, Anderson KE, Rosamond WD, Folsom AR
JournalCancer
Volume107
Issue1
Pagination28-36
Date Published2006 Jul 01
ISSN0008-543X
KeywordsAfrican Americans, Age Distribution, Cohort Studies, Colorectal Neoplasms, Comorbidity, European Continental Ancestry Group, Female, Humans, Incidence, Male, Metabolic Syndrome, Middle Aged, Prospective Studies, Risk, Risk Factors, Sex Distribution, United States
Abstract

BACKGROUND: The authors tested the hypothesis that the metabolic syndrome (> or =3 of the following components: high blood pressure, increased waist circumference, hypertriglyceridemia, low levels of high-density lipoprotein cholesterol, or diabetes/hyperglycemia) is a risk factor for colorectal cancer.

METHODS: Data from the Atherosclerosis Risk in Communities (ARIC) multicenter prospective cohort study were used. Metabolic syndrome components and other risk factors were collected during 1987 to 1989 from the 14,109 men and women in these analyses. One hundred ninety-four incident colorectal cancers were identified through the Year 2000. Multivariate Cox proportional hazards regression analyses were used to examine associations.

RESULTS: Baseline metabolic syndrome (> or =3 components vs. 0 components) had a positive association with age-adjusted and gender-adjusted colorectal cancer incidence (relative risk [RR], 1.49; 95% confidence interval [95%CI], 1.0-2.4); this association was attenuated after multivariate adjustment (RR, 1.39; 95%CI, 0.9-2.2). There was a dose-response association between colorectal cancer incidence and the number of metabolic syndrome components present at baseline (P for trend = .006) after multivariate adjustment. Analysis of gender revealed that the multivariate-adjusted association of metabolic syndrome with colorectal cancer was stronger in men (RR, 1.78; 95%CI, 1.0-3.6) and weaker in women (RR, 1.16; 95%CI, 0.6-2.2).

CONCLUSIONS: In this population-based cohort, metabolic syndrome was a risk factor for incident colorectal cancer in men but not women. Evidence is growing that the metabolic syndrome may be a marker for a physiologic milieu of growth that encourages tumor initiation, promotion, and/or progression.

DOI10.1002/cncr.21950
Alternate JournalCancer
PubMed ID16721800
Grant ListN01-HC 55015 / HC / NHLBI NIH HHS / United States
N01-HC 55016 / HC / NHLBI NIH HHS / United States
N01-HC 55018 / HC / NHLBI NIH HHS / United States
N01-HC 55019 / HC / NHLBI NIH HHS / United States
N01-HC 55020 / HC / NHLBI NIH HHS / United States
N01-HC 55021 / HC / NHLBI NIH HHS / United States
N01-HC 55022 / HC / NHLBI NIH HHS / United States
R03-CA65473 / CA / NCI NIH HHS / United States
T32 CA09607-15 / CA / NCI NIH HHS / United States
T32 GM08244-15 / GM / NIGMS NIH HHS / United States