Introduction
How diet affects microbial activity
Microbial metabolites linking systems
Effects on the brain
Effects on the skin
Dietary patterns that support this axis
Clinical and future applications
Inflammatory biomarker tracking
References
Further reading
This article examines how diet-driven gut microbes influence interconnected pathways linking mood, inflammation, skin health, and aging through immune, metabolic, and neuroendocrine signaling. It synthesizes evidence on microbial metabolites, dietary patterns, and biomarkers to explain how the gut–skin–brain axis shapes systemic health.
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Introduction
The gut-skin-brain axis refers to a bidirectional communication system in which diet, microbial activity, emotional states, and skin physiology continually interact. Food…