Caffeine might ease anxiety and depression by calming brain inflammation
A systematic review of animal research suggests that caffeine can reduce anxiety and depressive-like behaviors by acting as a brake on the brain's immune system and lowering neuroinflammation.
Recent research suggests that caffeine may help alleviate symptoms of anxiety and depression in rodents by reducing brain inflammation. A systematic review of 17 animal studies published in Translational Psychiatry found that caffeine consistently reduced behavioral signs of distress and lowered levels of inflammatory molecules.
In anxiety-related studies, caffeine-treated rats demonstrated reduced anxiety through increased exploration in maze tests and lower levels of oxidative stress and pro-inflammatory cytokines. Similarly, in depression models, caffeine prevented depressive-like behaviors, maintained motivation, and reduced inflammatory markers in brain regions associated with memory and emotion.
The findings indicate that caffeine's ability to block A2A receptors on microglia and astrocytes might help stabilize the brain's inflammatory response, contributing to its mood-enhancing effects.
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