Veteran Status and Body Weight: A Longitudinal Fixed-Effects Approach

Area of Science:

• Sociology
• Public Health
• Military Health

Background:

• A significant portion of the population serves in the military, yet the long-term health impacts remain understudied.
• Understanding the consequences of military service is crucial for veteran well-being.

Purpose of the Study:

• To estimate the relationship between peacetime military service and body weight.
• To investigate the long-term effects of military service on body mass index (BMI) and obesity.

Main Methods:

• Utilized longitudinal data from 6,304 men in the National Longitudinal Survey of 1979 (NLSY-79).
• Employed fixed-effects estimators over 13 years of data, controlling for time-varying life-course characteristics.
• Analyzed the association between active-duty military service and subsequent body weight.

Main Results:

• Veterans of active-duty military service exhibited higher levels of BMI.
• A significant increase in obesity rates was observed among military veterans.
• The study found that weight gained during service was not lost after transitioning to civilian life.

Conclusions:

• Peacetime military service is associated with increased BMI and obesity in men.
• Dietary habits and physical activity patterns during service contribute to long-term weight gain.
• The transition to less active civilian lifestyles exacerbates weight gain among veterans.