Population-level risks of alcohol consumption by amount, geography, age, sex, and year: a systematic analysis for the Global Burden of Disease Study 2020.
Level 3 - non-randomized controlled study
Systematic comparative risk assessment and burden-weighted epidemiological modeling of observational data
PubMed 35843246 · doi:10.1016/S0140-6736(22)00847-9
What was done
Using disease rate data from the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2020, researchers constructed burden-weighted dose-response relative risk curves across 22 health outcomes. They estimated the theoretical minimum risk exposure level (TMREL) and non-drinker equivalence (NDE; consumption level where health risk equals that of a non-drinker) across 21 regions (204 countries and territories) by 5-year age groups (individuals aged 15 to 95+ years), sex, and year from 1990 to 2020.
What was found
Among individuals aged 15–39 years in 2020, the TMREL ranged between 0 (95% uncertainty interval: 0–0) and 0.603 (0.400–1.00) standard drinks per day, and the NDE ranged between 0.002 (0–0) and 1.75 (0.698–4.30) standard drinks per day. For individuals aged 40 years and older, the burden-weighted relative risk curve was J-shaped across all regions, with a 2020 TMREL ranging from 0.114 (0–0.403) to 1.87 (0.500–3.30) standard drinks per day and an NDE ranging from 0.193 (0–0.900) to 6.94 (3.40–8.30) standard drinks per day. Of the population consuming harmful amounts of alcohol in 2020, 59.1% (54.3–65.4) were aged 15–39 years and 76.9% (73.0–81.3) were male.
Why it matters
This study demonstrates that minimum-risk alcohol consumption thresholds differ substantially by age and local disease burden, indicating that universal drinking guidelines fail to account for higher injury risks in younger populations.
Limits
The analysis relies on aggregate epidemiological modeling and observational relative risk curves rather than individual-level longitudinal tracking. The abstract does not report participant sample size or account directly for episodic binge drinking patterns versus continuous daily consumption.
Cited by
- supports Consuming two alcoholic drinks per week carries only a very small increase in health risk.