Genetic, psychological, and personal network factors associated with changes in binge drinking over 2 years among mexican heritage adolescents in the USA

Sunmi Song, Christopher Steven Marcum, Anna V. Wilkinson, Sanjay Shete, Laura M. Koehly

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Background Despite prevalent binge drinking and alcohol-dependent symptoms among Hispanics, few studies have examined how multidimensional factors influence Hispanic adolescents' binge drinking. Purpose This study examines the effects of genetic, psychological, and social network factors on binge drinking over time among Mexican heritage adolescents in the USA and whether there are correlations among genetic variants that are associated with binge drinking and psychological and network characteristics. Methods Mexican heritage adolescents (n = 731) participated in a longitudinal study, which included genetic testing at baseline, alcohol use assessments at first and second follow-ups, and questionnaires on sensation seeking, impulsivity, and peer and family network characteristics at second follow-up. Logistic regression and Spearman correlation analyses were performed. Results After adjusting for demographic characteristics, underlying genetic clustering, and binge drinking at first follow-up, two genetic variants on tryptophan hydroxylase 2 (TPH2; rs17110451, rs7963717), sensation seeking and impulsivity, and having a greater fraction of peers who drink or encourage drinking alcohol were associated with greater risk whereas another genetic variant on TPH2 (rs11178999) and having a greater fraction of close family relationships were associated with reduced risk for binge drinking at second follow-up. Genetic variants in TPH1 (rs591556) were associated with sensation seeking and impulsivity, while genetic variants in TPH2 (rs17110451) were associated with the fraction of drinkers in family. Conclusions Results reveal that genetic variants in the serotonin pathway, behavioral disinhibition traits, and social networks exert joint influences on binge drinking in Mexican heritage adolescents in the USA.

Original languageEnglish (US)
Pages (from-to)126-137
Number of pages12
JournalAnnals of Behavioral Medicine
Volume53
Issue number2
DOIs
StatePublished - Feb 1 2019

Keywords

  • Binge drinking
  • Genetic risk
  • Hispanic adolescents
  • Impulsivity
  • Peer and family network
  • Sensation seeking

ASJC Scopus subject areas

  • General Psychology
  • Psychiatry and Mental health

MD Anderson CCSG core facilities

  • Biostatistics Resource Group

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