Environmental Enrichment: An Underestimated Factor Associated With Depression

Area of Science:

• Psychiatry and Behavioral Science
• Clinical Psychology

Background:

• Environmental enrichment (EE) benefits are known in animal models of depression.
• Translating EE benefits to humans is challenging due to individual differences and environmental limits.

Purpose of the Study:

• To examine the link between EE and depression.
• To compare demographic factors and EE levels in individuals with and without depression.

Main Methods:

• Cross-sectional, comparative retrospective study in Mexico City.
• 96 controls and 86 individuals with major depression (MD) diagnosed via DSM-5 criteria.
• Assessed EE using the Environmental Enrichment indicator (EEI) and analyzed data with chi-square, t-tests, and logistic regression.

Main Results:

• Individuals with MD showed significantly lower EE levels than controls.
• Low EE, unemployment, housewife status, and female gender predicted depression.
• Higher education was associated with decreased depression risk.
• Low EE mediated the occupation-depression link, and EE modulated demographic impacts.

Conclusions:

• Female gender and occupation are linked to depression, with low EE being a predictor.
• Higher education appears to mitigate depression risk.
• EE levels are crucial in understanding the interplay between demographics and depression.