How Chronic Stress Increases Risk of Depression
Nov 08, 2025•8 min
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Episode description
- Chronic stress triggers a neutrophil invasion into brain-protective layers, driving depression-like behaviors through immune activation rather than just hormonal changes
- Stress-induced immune signals hijack brain reward circuits, reducing dopamine and shifting neural activity toward threat detection over pleasure-seeking behaviors
- Prolonged stress damages brain mitochondria, reducing cellular energy production while creating an inflammatory feedback loop that worsens mood and cognitive function
- Interferon pathways and inflammatory cytokines like IL-6 cross into the brain, directly altering neuron firing patterns in emotional regulation centers
- Natural interventions including healthy carbohydrates, regular exercise, positive thinking, creativity, and physical touch help counter stress-induced immune activation and protect mental health
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