Does higher education protect against obesity? Evidence using Mendelian randomization

Area of Science:

• Genetics
• Public Health
• Epidemiology

Background:

• Obesity is a growing global health concern.
• The relationship between socioeconomic factors, such as education, and obesity is complex.
• Understanding causal pathways is crucial for effective public health interventions.

Purpose of the Study:

• To investigate the causal effect of education on body mass index (BMI) using Mendelian randomization.
• To explore education as a potential protective factor against obesity.

Main Methods:

• Utilized data from the Young Finns Study (N=2011), a nationally representative cohort.
• Employed Mendelian randomization with a genetic score for education as an instrumental variable.
• Combined BMI measurements (2007, 2011) with register-based education data (2007).

Main Results:

• Linear regression showed an association between more years of education and lower BMI (b=-0.22).
• Mendelian randomization suggested a potential negative causal effect of education on BMI (b=-0.84).

Conclusions:

• Education may serve as a protective factor against obesity.
• Findings support the role of educational attainment in mitigating obesity risk in developed nations.