, Volume 16, Issue 9, pp 1055-1058

Prostate Cancer Risk Among Men with Diabetes Mellitus (Spain)

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Objective: Observational studies have associated diabetes with a decreased risk of prostate cancer. We aimed to evaluate this association using the General Practitioner Research Database in the UK.

Methods: Population based case–control study nested in a cohort.

Results: We identified 2,183 incident cases of prostate cancer between January 1995 and December 2001. We found that diabetic patients had a decreased risk of prostate cancer (OR = 0.72; 95% CI: 0.59–0.87). This association was observed among treated diabetics (OR = 0.63; 95% CI: 0.50–0.80) but not among untreated diabetics (OR = 1.01; 95% CI: 0.73–1.40). Our results suggest that the observed reduced risk could be restricted to users of insulin or sulphonylureas.

Conclusion: Patients with diabetes have a decreased risk of prostate cancer. The role of antidiabetic treatment in this association warrants further research.