PMID- 36184363 OWN - NLM STAT- MEDLINE DCOM- 20221122 LR - 20221202 IS - 1590-3729 (Electronic) IS - 0939-4753 (Linking) VI - 32 IP - 12 DP - 2022 Dec TI - A causal relationship between alcohol intake and type 2 diabetes mellitus: A two-sample Mendelian randomization study. PG - 2865-2876 LID - S0939-4753(22)00340-4 [pii] LID - 10.1016/j.numecd.2022.08.013 [doi] AB - BACKGROUND AND AIMS: We investigated whether alcohol intake has a causal relationship with type 2 diabetes mellitus (T2DM) risk in adults of the Korean Genomic Epidemiology Study using two-sample Mendelian randomization (MR) analysis. METHODS AND RESULTS: Daily alcohol intake was calculated based on the type, average amount, and frequency of alcohol consumption for six months before the interview. The participants were divided into low- and high-alcohol intake of 20 g/day. After adjusting for the covariates related to T2DM, the independent genetic variants (instrumental variables) related to alcohol intake were explored by GWAS analysis in a city hospital-based cohort (n = 58,701). SNPs with a significant level of p-value <5 x 10(-8) and linkage disequilibrium of r(2) < 0.001 were retrieved. MR methods were used to analyze the causality between alcohol intake and the T2DM risk, and the heterogeneity and leave-one-out sensitivity analyses were conducted in Ansan/Ansung plus rural cohorts (n = 13,598). High alcohol intake increased T2DM risk when the inverse-variance weighted (P = 0.012) and weighted median (P = 0.034) methods were used, but not when the MR-Egger method was used. No significant heterogeneity and horizontal pleiotropy between alcohol intake and T2DM were detected. A single genetic variant did not affect the causal association in a leave-one-out sensitivity analysis. CONCLUSION: This study supports that heavy alcohol intake appears to be causally associated with T2DM risk. CI - Copyright (c) 2022 The Italian Diabetes Society, the Italian Society for the Study of Atherosclerosis, the Italian Society of Human Nutrition and the Department of Clinical Medicine and Surgery, Federico II University. Published by Elsevier B.V. All rights reserved. FAU - Liu, Meiling AU - Liu M AD - Department of Food and Nutrition, Obesity/Diabetes Research Center, Hoseo University, Asan, 31499, Republic of Korea. FAU - Park, Sunmin AU - Park S AD - Department of Food and Nutrition, Obesity/Diabetes Research Center, Hoseo University, Asan, 31499, Republic of Korea. Electronic address: smpark@hoseo.edu. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220817 PL - Netherlands TA - Nutr Metab Cardiovasc Dis JT - Nutrition, metabolism, and cardiovascular diseases : NMCD JID - 9111474 SB - IM MH - Humans MH - Adult MH - *Mendelian Randomization Analysis MH - Genome-Wide Association Study MH - *Diabetes Mellitus, Type 2/diagnosis/epidemiology/genetics MH - Polymorphism, Single Nucleotide MH - Alcohol Drinking/adverse effects/epidemiology/genetics OTO - NOTNLM OT - Alcohol OT - Fat intake OT - Genetic variants OT - Obesity OT - Two-sample Mendelian randomization (MR) OT - Type 2 diabetes COIS- Conflict of interest The authors declare no conflict of interest. EDAT- 2022/10/03 06:00 MHDA- 2022/11/23 06:00 CRDT- 2022/10/02 22:14 PHST- 2022/03/15 00:00 [received] PHST- 2022/08/08 00:00 [revised] PHST- 2022/08/09 00:00 [accepted] PHST- 2022/10/03 06:00 [pubmed] PHST- 2022/11/23 06:00 [medline] PHST- 2022/10/02 22:14 [entrez] AID - S0939-4753(22)00340-4 [pii] AID - 10.1016/j.numecd.2022.08.013 [doi] PST - ppublish SO - Nutr Metab Cardiovasc Dis. 2022 Dec;32(12):2865-2876. doi: 10.1016/j.numecd.2022.08.013. Epub 2022 Aug 17.