Parental alcohol habits influence long-term child behavior

A 23-year study of the Australian population has revealed that parental alcohol consumption habits significantly influence the long-term behavior of their children. Utilizing data from the Household, Income and Labour Dynamics in Australia (HILDA) survey, researchers tracked over 6,600 individuals across 43,000 observations.

The research, led by Sergey Alexeev from the University of Sydney and the University of New South Wales, indicates that this influence is most critical between the ages of 15 and 17, a period when adolescents form perceptions of what constitutes ‘normal’ consumption. The study found that the impact is strongest between parents and children of the same sex: mothers have a greater influence on daughters, while fathers impact sons more significantly.

Findings suggest that these patterns are learned behaviors rather than purely genetic. This was evidenced by the fact that the relationship between mothers and daughters remained strong regardless of whether the mother was a biological, adoptive, or stepmother. While consumption trends tend to decrease during a person's 20s, they often resurface between the ages of 28 and 37 as individuals become parents themselves.

In Australia, the proportion of adolescents aged 14 to 17 who consumed alcohol in the previous 12 months dropped from 70% in 2001 to approximately 30% in the 2022-2023 period.