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The Association between Magnesium Intake and Fasting Insulin Concentration in Healthy Middle-Aged Women

Department of Nutrition, Simmons College (T.T.F.), Harvard School of Public Health; Channing Laboratory
Department of Nutrition (T.T.F., W.W., F.H.), Harvard School of Public Health; Channing Laboratory
Department of Epidemiology (J.A.M., S.L., W.W.), Harvard School of Public Health; Channing Laboratory (J.A.M., W.W., F.H.)
Division of General Medicine (C.S.), Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
Division of Preventive Medicine (J.A.M., S.L.), Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts

View larger version (21K): [in a new window]   Fig. 1. Geometric means of fasting insulin concentrations (µU/mL) by quartiles of magnesium intake according to BMI levels. Adjusted for age (5 categories), total energy (quintiles), physical activity (quintiles), alcohol intake (0g, 0.1–15g, 15.1–30g, >30g/day), smoking (never, past smoker, up to 14 cigarettes, 15+ cigarettes a day), family history of diabetes, and weekly hours of sitting down (5 categories). Q1 to Q4 = Quartiles of magnesium intake. BMI >25, p for trend = 0.02; BMI 25, p for trend = 0.2.