Journal
NUTRIENTS
Volume 15, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/nu15071592
Keywords
alcohol consumption; chronic kidney disease; cohort study; dose-dependent association; glomerular filtration rate; meta-analysis; proteinuria; systematic review
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This systematic review examined the association between alcohol consumption and chronic kidney disease. The results showed a J-shaped association between alcohol consumption and the incidence of proteinuria. Mild drinkers had a lower risk of proteinuria and low eGFR, while heavy drinkers had a higher risk of proteinuria but a lower risk of low eGFR.
Previous cohort studies have reported conflicting associations between alcohol consumption and chronic kidney disease, characterized by proteinuria and low glomerular filtration rate (GFR). This systematic review, which included 14,634,940 participants from 11 cohort studies, assessed a dose dependent association of alcohol consumption and incidence of proteinuria and low estimated GFR (eGFR) of <60 mL/min/1.73 m2. Compared with non-drinkers, the incidence of proteinuria was lower in drinkers with alcohol consumption of <12.0 g/day (relative risk 0.87 [95% confidence interval 0.83, 0.92]), but higher in drinkers with alcohol consumption of 36.1-60.0 g/day (1.09 [1.03, 1.15]), suggesting a J-shaped association between alcohol consumption and the incidence of proteinuria. Incidence of low eGFR was lower in drinkers with alcohol consumption of <12.0 and 12.1-36.0 than in non-drinkers (<12.0, 12.1-36.0, and 36.1-60.0 g/day: 0.93 [0.90, 0.95], 0.82 [0.78, 0.86], and 0.89 [0.77, 1.03], respectively), suggesting that drinkers were at lower risk of low eGFR. In conclusion, compared with non-drinkers, mild drinkers were at lower risk of proteinuria and low eGFR, whereas heavy drinkers had a higher risk of proteinuria but a lower risk of low eGFR. The clinical impact of high alcohol consumption should be assessed in well-designed studies.
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