Eating healthy under work stress: A gene stress interaction model

Area of Science:

• Psychology
• Genetics
• Nutritional Science

Background:

• Work stress influences employee dietary choices, but individual responses vary.
• The genetic underpinnings of these differing dietary behaviors under stress are not well understood.
• The dopamine D2 receptor (DRD2) gene influences reward pathways and eating behaviors.

Purpose of the Study:

• To investigate the Gene × Stress interaction model of dietary choice.
• To examine the role of DRD2 gene variations in moderating the relationship between work stress and healthy eating.
• To understand individual differences in dietary responses to workplace stress.

Main Methods:

• Genotyping of 12,269 employees' saliva samples.
• Administration of questionnaires on work stress, healthy dietary intentions, and behaviors.
• Application of nonlinear multiple regressions to analyze gene-stress interactions.

Main Results:

• Higher work stress correlated with lower healthy dietary intentions.
• Healthy dietary behaviors showed an inverted U-shaped relationship with work stress.
• DRD2 gene significantly moderated these associations, particularly in C allele carriers; the AA genotype showed no stress-related dietary changes.

Conclusions:

• Healthy dietary intentions and behaviors respond differently to work stress.
• DRD2 gene variations play a crucial role in explaining individual differences in dietary choices under stress.
• This highlights a genetic component influencing stress-related eating behaviors.