Educational attainment and drinking behaviors: Mendelian randomization study in UK Biobank

Area of Science:

• Genetics
• Epidemiology
• Behavioral Science

Background:

• Observational studies suggest a link between educational attainment and drinking behaviors.
• Causal relationships between education and alcohol consumption patterns remain unclear.
• Understanding these links is crucial for public health interventions.

Purpose of the Study:

• To determine if higher educational attainment causally influences various drinking behaviors.
• To investigate the association with alcohol intake amount, type, frequency, and meal context.
• To explore gender-specific differences in these causal relationships.

Main Methods:

• Utilized Mendelian randomization analysis on a large cohort (UK Biobank, n=334,507).
• Employed genetic variants associated with educational attainment as instrumental variables.
• Analyzed total alcohol intake, specific types (red wine, beer, spirits), drinking frequency, and drinking with meals.

Main Results:

• One additional year of education was causally associated with higher total alcohol intake (beta=0.44).
• Stronger associations observed for red wine consumption; inverse relations for beer/cider and spirits.
• Higher education also linked to increased drinking frequency (beta=0.54) and drinking with meals (OR=3.10).

Conclusions:

• Higher educational attainment has a causal effect on increased alcohol consumption, particularly red wine.
• Education influences drinking frequency and the tendency to consume alcohol with meals.
• Findings underscore the importance of tailored alcohol behavior improvement strategies for highly educated individuals.