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The metabolic syndrome is associated with reduced risk of prostate cancer.

TitleThe metabolic syndrome is associated with reduced risk of prostate cancer.
Publication TypeJournal Article
Year of Publication2006
AuthorsTande AJ, Platz EA, Folsom AR
JournalAm J Epidemiol
Volume164
Issue11
Pagination1094-102
Date Published2006 Dec 01
ISSN0002-9262
KeywordsHumans, Incidence, Male, Metabolic Syndrome, Middle Aged, Proportional Hazards Models, Prospective Studies, Prostatic Neoplasms, Risk Factors, United States
Abstract

Diabetes is associated with reduced risk of prostate cancer, but whether the metabolic syndrome is associated with prostate cancer is not established. The authors assessed this association in the Atherosclerosis Risk in Communities (ARIC) Study, comprising 6,429 men in four US communities initially with no history of cancer and aged 45-64 years. Metabolic syndrome and other risk factors were assessed in 1987-1989. Follow-up for prostate cancer incidence (n = 385 through 2000) was accomplished through cancer registry and hospital linkage. At baseline, 1,871 men (29.5%) had the metabolic syndrome. After the authors adjusted for other risk factors, men with the metabolic syndrome (> or =3 components) were significantly less likely to develop prostate cancer (relative risk = 0.77, 95% confidence interval: 0.60, 0.98) than men without the metabolic syndrome. Diabetes was negatively associated with prostate cancer, although the confidence interval included 1 (relative risk = 0.73, 95% confidence interval: 0.51, 1.05). When diabetic participants were excluded, the inverse association between metabolic syndrome and prostate cancer incidence was slightly strengthened. In this study, the metabolic syndrome was associated with decreased prostate cancer incidence. The authors hypothesize that this finding reflects a decrease in bioavailable (free and albumin-bound) testosterone with the metabolic syndrome and a concomitant reduction in prostate cancer risk.

DOI10.1093/aje/kwj320
Alternate JournalAm J Epidemiol
PubMed ID16968859
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