title: Age at regular drinking, clinical course, and heritability of alcohol dependence in the San Francisco family study: a gender analysis.
abstract: We examined gender differences in age of onset, clinical course, and heritability of alcohol dependence in 2,524 adults participating in the University of California San Francisco (UCSF) family study of alcoholism. Men were significantly more likely than women to have initiated regular drinking during adolescence. Onset of regular drinking was not found to be heritable but was found to be significantly associated with a shorter time to onset of alcohol dependence. A high degree of similarity in the sequence of alcohol-related life events was found between men and women, however, men experienced alcohol dependence symptoms at a younger age and women had a more rapid clinical course. Women were found to have a higher heritability estimate for alcohol dependence (h(2)= .46) than men (h(2)= .32). These findings suggest that environmental factors influencing the initiation of regular drinking rather than genetic factors associated with dependence may in part underlie some of the gender differences seen in the prevalence of alcohol dependence in this population. (Am J Addict 2010;00:1-10).
authors.affiliation: Department of Molecular and Integrative Neurosciences, The Scripps Research Institute, La Jolla, California, USA. cindye@scripps.edu
authors.forename: Cindy L
authors.initials: CL
authors.lastname: Ehlers
authors.forename: Ian R
authors.initials: IR
authors.lastname: Gizer
authors.forename: Cassandra
authors.initials: C
authors.lastname: Vieten
authors.forename: Allison
authors.initials: A
authors.lastname: Gilder
authors.forename: David A
authors.initials: DA
authors.lastname: Gilder
authors.forename: Gina M
authors.initials: GM
authors.lastname: Stouffer
authors.forename: Philip
authors.initials: P
authors.lastname: Lau
authors.forename: Kirk C
authors.initials: KC
authors.lastname: Wilhelmsen
mesh_terms: D000367:Age Factors; D017668:Age of Onset; D000428:Alcohol Drinking / Q000453:epidemiology* / Q000523:psychology; D000437:Alcoholism / Q000453:epidemiology* / Q000235:genetics / Q000523:psychology; D018450:Disease Progression; D005260:Female; D020022:Genetic Predisposition to Disease / Q000523:psychology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012495:San Francisco; D012727:Sex Characteristics