Alcohol consumption and serum liver-derived enzymes in a Danish population aged 30-50 years.

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Abstract
BACKGROUND: Based on the increased consumption of alcohol in Denmark the aim of this study was to measure prevalence of abnormal liver-derived enzymes in a homogeneous Danish population and possible associations with alcohol consumption, smoking and body mass index (BMI). METHOD: In a representative population sample of 905 people (aged 30-50) from the baseline survey of the Ebeltoft Health Promotion Project in Denmark, we examined prevalence of abnormal liver-derived enzymes and its possible association with self-reported alcohol consumption, smoking and BMI, applying logistic regression analyses. RESULTS: In a significant proportion, 12% (women 8%; men 16%) of the cohort we found raised levels of liver-derived enzymes associated with moderate self-reported alcohol intake adjusted for BMI and smoking. If the intake was higher than moderate, i.e. > 28 units per week (one unit equals 12 g of alcohol), the odds ratio (OR) for raised liver enzymes increased further; S-gamma-glutamyltransferase (GGT) (OR: for women 24.4; men 18.4). S-aspartate-aminotransferase (ASAT) (24.2; 5.8) and S-alanine-aminotransferase (ALAT) (27.2; 3.0). Furthermore, daily smoking increased the risk of raised liver enzymes in women (OR: 3.4-4.2), and obesity (BMI > or = 30 kg/m2) in men showed a positive association with all three enzymes (OR: 3.0-9.0). CONCLUSIONS: The occurrence of raised liver-derived enzymes was frequent in the Danish population sample and associated with moderate self-reported alcohol consumption adjusted for BMI and smoking.

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