期刊
ENVIRONMENTAL HEALTH PERSPECTIVES
卷 122, 期 10, 页码 1059-1065出版社
US DEPT HEALTH HUMAN SCIENCES PUBLIC HEALTH SCIENCE
DOI: 10.1289/ehp.1408198
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资金
- Danish Cancer Society
- Aase and Ejnar Danielsens Foundation
- King Christian the Foundation
- A.P Moller Foundation
- Hartmann Brothers Foundation
- Foundation of 1870
- Snedker Sophus Jacobsen and hustru Astrid Jacobsen Foundation
- Holger Hjortenberg and hustru Dagmar Hjortenberg Foundation
- Frode V. Nyegaard Foundation
- Simon Spies Foundation
BACKGROUND: Established causes of diabetes do not fully explain the present epidemic. High-level arsenic exposure has been implicated in diabetes risk, but the effect of low-level arsenic exposure in drinking water remains unclear. OBJECTIVE: We sought to determine whether long-term exposure to low-level arsenic in drinking water in Denmark is associated with an increased risk of diabetes using a large prospective cohort. METHODS: During 1993-1997, we recruited 57,053 persons. We followed each cohort member for diabetes occurrence from enrollment until 31 December 2006. We traced and geocoded residential addresses of the cohort members and used a geographic information system to link addresses with water-supply areas. We estimated individual exposure to arsenic using all addresses from 1 January 1971 until the censoring date. Cox proportional hazards models were used to model the association between arsenic exposure and diabetes incidence, separately for two definitions of diabetes: all cases and a more strict definition in which cases of diabetes based solely on blood glucose results were excluded. RESULTS: Over a mean follow-up period of 9.7 years for 52,931 eligible participants, there were a total of 4,304 (8.1%) diabetes cases, and 3,035 (5.8%) cases of diabetes based on the more strict definition. The adjusted incidence rate ratios (IRRs) per 1-mu g/L increment in arsenic levels in drinking water were as follows: IRR = 1.03 (95% CI: 1.01, 1.06) and IRR = 1.02 (95% CI: 0.99, 1.05) for all and strict diabetes cases, respectively. CONCLUSIONS: Long-term exposure to low-level arsenic in drinking water may contribute to the development of diabetes.
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