Cardiovascular disease mortality in Europeans in relation to fasting and 2-h plasma glucose levels within a normoglycemic range

• OBJECTIVE To study mortality in relation to fasting plasma glucose (FPG) and 2-h plasma glucose levels within the normoglycemic range. RESEARCH DESIGN AND METHODS Data from 19 European cohorts comprising 12,566 men and 10,874 women who had FPG <6.1 mmol/l and 2-h plasma glucose <7.8 mmol/l at baseline examination were analyzed. Multivariate-adjusted hazard ratios (HRs) and 95% CIs for deaths from cardiovascular disease (CVD), non-CVD, and all causes were estimated for individuals whose 2-h plasma glucose > FPG (group II) compared with those whose 2-h plasma glucose ≤ FPG (group I). RESULTS A total of 827 (246) CVD and 611 (351) non-CVD and 1,438 (597) all-cause deaths occurred in men (women). Group II was older and had higher BMI, blood pressure, and fasting insulin than group I. The multivariate-adjusted HRs (95% CIs) for CVD, non-CVD, and all-cause mortality were 1.22 (1.05–1.41), 1.09 (0.92–1.29), and 1.16 (1.04–1.30) in men and 1.40 (1.03–1.89), 0.99 (0.79–1.25), and 1.13 (0.94–1.35) in women, respectively, for group II as compared with group I. HRs were 1.25 (1.05–1.50), 1.09 (0.89–1.34), and 1.18 (1.03–1.35) in men and 1.60 (1.03–2.48), 1.05 (0.78–1.42), and 1.18 (0.93–1.51) in women, respectively, after additional adjustment for fasting insulin in a subgroup of individuals. CONCLUSIONS In individuals with both FPG and 2-h plasma glucose within the normoglycemic range, high 2-h plasma glucose was associated with insulin resistance and increased CVD mortality.

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