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Exploring the Dose-Response Relationship Between Alcohol Consumption and Harm to Others in Australia
Koen Smit1, Heng Jiang1,2,3, Katherine J Karriker-Jaffe4
1Centre for Alcohol Policy Research, School of Psychology and Public Health, La Trobe University, Melbourne, Australia.
Drug and Alcohol Review
|August 7, 2026
Summary
Increased alcohol consumption and heavy episodic drinking (HED) by individuals are directly linked to greater harm experienced by others. Reducing frequent heavy drinking may significantly decrease alcohol
Area of Science:
- Public Health
- Epidemiology
- Alcohol Research
Background:
- Alcohol consumption frequently results in harm to individuals other than the drinker.
- Limited research quantifies the exposure-response gradient between a drinker's alcohol volume/heavy episodic drinking (HED) frequency and the harm experienced by others.
- This study investigates dose-response relationships across sociodemographic groups.
Purpose of the Study:
- To examine the dose-response relationship between a nominated drinker's alcohol consumption (volume and HED frequency) and the severity of harm experienced by others.
- To explore potential variations in this relationship across different sociodemographic groups.
Main Methods:
- Utilized data from the Australian 2021 Alcohol's Harm to Others (AHTO) Survey (n=2574).
- Focused on 554 participants who reported harm from another person's drinking in the past 12 months.
- Assessed harm severity using an overall harm score (0-10) and a count of 14 specific harms, linked to the nominated drinker's reported alcohol volume and HED frequency.
Main Results:
- A significant positive dose-response relationship was found between the nominated drinker's weekly alcohol volume and HED frequency, and the degree of harm experienced.
- Subgroup analyses indicated potentially stronger effects among women, younger individuals, and when the drinker was a former partner, though these were not statistically significant.
- The dose-response gradient was more pronounced at higher levels of alcohol exposure.
Conclusions:
- Higher alcohol consumption and more frequent HED are unequivocally associated with increased severity of harm to others.
- A clear dose-response gradient exists between a known drinker's alcohol intake and the harm inflicted upon others.
- Reducing very frequent heavy drinking could lead to disproportionately larger decreases in the burden of alcohol's harm to others.
Keywords:
alcohol consumptionalcohol's harms to othersdose–response relationshipheavy episodic drinkingsocio‐demographic factorsMore Related Videos
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