Journal
MICROORGANISMS
Volume 9, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/microorganisms9040723
Keywords
anxiety; depression; mood; gut microbiota; stress; probiotics; gut-inflammation; gut-permeability; enteric nervous system; vagus nerve
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Funding
- Riddet Institute, a New Zealand Centre of Research Excellence - Tertiary Education Commission
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Research shows that stress resilience is influenced by various psychological and biological factors, including the gut microbiota. Stress can alter the gut microbiota, potentially contributing to stress-related changes in mood. Most of the existing research is based on animal models, with limited translational evidence from human clinical studies.
Episodes of depression and anxiety commonly follow the experience of stress, however not everyone who experiences stress develops a mood disorder. Individuals who are able to experience stress without a negative emotional effect are considered stress resilient. Stress-resilience (and its counterpart stress-susceptibility) are influenced by several psychological and biological factors, including the microbiome-gut-brain axis. Emerging research shows that the gut microbiota can influence mood, and that stress is an important variable in this relationship. Stress alters the gut microbiota and plausibly this could contribute to stress-related changes in mood. Most of the reported research has been conducted using animal models and demonstrates a relationship between gut microbiome and mood. The translational evidence from human clinical studies however is rather limited. In this review we examine the microbiome-gut-brain axis research in relation to stress resilience.
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