Gut-Skin Axis

What It Is

The bidirectional communication network between the gut microbiome and the skin, mediated through immune, hormonal, metabolic and neural pathways. Gut dysbiosis (imbalanced microbiome) is increasingly linked to inflammatory skin conditions — acne, rosacea, eczema, and psoriasis all show associations with specific gut microbiome patterns. Mechanisms include: leaky gut increasing systemic bacterial translocation and inflammatory signalling; altered short-chain fatty acid production affecting skin immune regulation; gut-derived serotonin and neuropeptide effects on skin inflammation.

Key Context

Supporting the gut-skin axis: diverse plant-based diet (30+ plant species per week supports microbiome diversity), probiotic supplementation (Lactobacillus and Bifidobacterium species with skin evidence), prebiotic foods (onion, garlic, leeks, oats, bananas), and reducing gut-disruptive factors (unnecessary antibiotics, chronic stress, ultra-processed foods).

Learn More

• Science Deep Dives
• Acne-Prone Skin Routine