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Also reported in: diversity score
Your gut microbiome diversity is within the normal range. This is a satisfactory baseline, though optimal diversity is higher. Continued dietary support for microbiome health is beneficial.
Your gut microbiome diversity is critically low. A Shannon diversity index below 2 indicates near-complete loss of microbial diversity — your gut is essentially a monoculture of a few dominant species. This very compromises immune function, metabolic health, gut barrier integrity, and resistance to pathogen overgrowth. This pattern is seen after prolonged antibiotic use, noticeable illness, or significant microbiome disruption.
Seek medical evaluation. Fecal microbiota transplantation (FMT) consultation may be appropriate in noticeable cases. Intensive probiotic therapy, prebiotic fiber, and dietary restoration are needed under medical guidance.
Microbiome diversity critically low (Shannon <2) — noticeable gut dysbiosisYour gut microbiome diversity is significantly low. A diverse microbiome is essential for immune regulation, vitamin production, short-chain fatty acid synthesis, and protection against pathogens. Low diversity is strongly associated with obesity, autoimmune conditions, inflammatory bowel disease, mental health conditions, and metabolic disorders.
Discuss with your doctor or functional medicine practitioner. Increase dietary fiber variety (plant diversity target: 30+ different plant species per week), fermented foods, prebiotic supplements, and consider probiotic therapy. Avoid unnecessary antibiotics.
Microbiome diversity low (Shannon 2–3) — significant gut dysbiosisYour gut microbiome diversity is below optimal. While not very depleted, increasing diversity would better support immune function, metabolic health, and gut barrier integrity.
Increase dietary plant diversity to 30+ different plant species per week. Include fermented foods (yogurt, kefir, kimchi, sauerkraut) regularly. Avoid unnecessary antibiotic use.
Microbiome diversity borderline low (Shannon 3–4) — below-optimal gut diversityYour gut microbiome diversity is within the normal range. This is a satisfactory baseline, though optimal diversity is higher. Continued dietary support for microbiome health is beneficial.
Continue fiber-rich diet with plant food diversity. Fermented foods and minimal antibiotic exposure will help maintain and improve diversity.
Microbiome diversity within normal range (Shannon 4–5) — adequate gut microbial diversityYour gut microbiome diversity is in the optimal range. High microbial diversity is associated with better immune regulation, metabolic health, mood, and resilience against gut infections and dysbiosis. This is an excellent result.
No action needed. Continue the diet and lifestyle habits supporting your excellent microbiome diversity.
Microbiome diversity optimal (Shannon >6) — excellent gut microbial diversityYour gut microbiome diversity is above the typical reference range. Very high microbial diversity is generally associated with good health outcomes and robust gut function.
No action needed. Continue supporting your gut microbiome through diverse plant-rich diet.
Microbiome diversity above typical range — very high diversity; generally favorableYour gut microbiome diversity is very high, indicating an exceptionally rich and varied gut bacterial ecosystem. This is associated with robust gut and systemic health.
No action needed. This is an outstanding gut health result.
Microbiome diversity very high — exceptional gut microbial richnessYour gut microbiome diversity is at the highest end of the scale, reflecting an exceptionally rich and complex microbial ecosystem. This level of diversity is associated with optimal gut health and disease resilience.
No action needed. Maintain the dietary and lifestyle habits that have cultivated this exceptional gut microbiome.
Microbiome diversity very high — exceptional microbial richnessUpload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.