Rxivist logo

Rxivist combines preprints from bioRxiv with data from Twitter to help you find the papers being discussed in your field. Currently indexing 73,897 bioRxiv papers from 321,562 authors.

Educational attainment causally impacts drinking behaviors and risk for alcohol dependence: results from a two-sample Mendelian randomization study in ~ 780,000 study participants

By Daniel B. Rosoff, Toni-Kim Clarke, Mark J. Adams, Andrew M. McIntosh, George Davey Smith, Jeesun Jung, Falk W Lohoff

Posted 22 Feb 2019
bioRxiv DOI: 10.1101/557595 (published DOI: 10.1038/s41380-019-0535-9)

Observational studies suggest that lower educational attainment (EA) may be associated with risky alcohol use behaviors; however, these findings may be biased by confounding and reverse causality. We performed two-sample Mendelian randomization (MR) using summary statistics from recent genome-wide association studies (GWAS) with >780 000 participants to assess the causal effects of EA on alcohol use behaviors and alcohol dependence (AD). Fifty-three independent genome-wide significant SNPs previously associated with EA were tested for association with alcohol use behaviors. We show that while genetic instruments associated with increased EA are not associated with total amount of weekly drinks, they are associated with reduced frequency of binge drinking (6 or more drinks)(Beta= -0.198, 95% CI, -0.297-0.099, PIVW=9.14x10-5), reduced total drinks consumed per drinking day (Beta=-0.207, 95% CI, -0.293-0.120, PIVW=2.87x10-6), as well as lower weekly distilled spirits intake (Beta=-0.148, 95% CI, -0.188-0.107, PIVW=6.24x10-13). Conversely, genetic instruments for increased EA were associated with increased alcohol intake frequency (Beta=0.331, 95% CI, 0.267-0.396, PIVW= 4.62x10-24), and increased weekly white wine (Beta=0.199, 95% CI, 0.159-0.238, PIVW=7.96x10-23) and red wine intake (Beta=0.204, 95% CI, 0.161-0.248, PIVW=6.67x10-20). Genetic instruments associated with increased EA reduced AD risk: an additional 3.61 years schooling reduced the risk by approximately 50% (ORIVW=0.508, 95% CI, 0.315-0.819, PIVW=5.52x10-3). Consistency of results across complementary MR methods accommodating different assumptions about genetic pleiotropy strengthened causal inference. Our findings suggest EA may have important effects on alcohol consumption patterns and may provide potential mechanisms explaining reported associations between EA and adverse health outcomes.

Download data

  • Downloaded 476 times
  • Download rankings, all-time:
    • Site-wide: 25,635 out of 73,896
    • In epidemiology: 343 out of 1,556
  • Year to date:
    • Site-wide: 23,096 out of 73,896
  • Since beginning of last month:
    • Site-wide: 23,096 out of 73,896

Altmetric data


Downloads over time

Distribution of downloads per paper, site-wide


PanLingua

Sign up for the Rxivist weekly newsletter! (Click here for more details.)


News