According to an article published in the current issue of JAMA , a review of 25 studies involving a total of 1.2 m patients showed that smoking is linked to an increased risk of diabetes.
Analysis of the data indicated that active smokers have a 44% increased risk of developing type 2 diabetes compared with non-smokers. The risk increased with the number of cigarettes smoked, heavy smokers had 61% of increased risk compared with lighter smokers (29%), but the authors said there is a need for further studies to establish whether this association is causal.
Source: "Active Smoking and the Risk of Type 2 Diabetes - A Systematic Review and Meta-analysis" JAMA. 2007;298(22):2654-2664 (abstract only)
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