Prevotella
Prevotella is a genus within the Bacteroidetes phylum that is skilled at fermenting plant fibers and complex carbohydrates. Its abundance often tracks with fiber- and plant-rich, less processed diets.
Prevotella is frequently discussed as part of a plant-forward gut pattern and is often contrasted with Bacteroides in research on how diet shapes the community. Its share can vary widely between people and populations depending on typical eating patterns.
A higher Prevotella share means this group forms a larger part of your sample and is commonly associated with fiber-rich, plant-heavy diets. Because the value is relative and its health associations are mixed in the research, a higher share is descriptive rather than simply good, and not a diagnosis.
A lower share means this group is lightly represented in your sample, which is common in more Western dietary patterns and is not a diagnosis by itself.
No specific Prevotella percentage is established as a goal, and its role appears to depend on context. As this science is evolving and the value is a relative share, look to overall diversity and dietary variety and interpret with a clinician.
Sources
Educational context only, not medical advice or a diagnosis. Reference ranges vary by lab, age and sex; always discuss your results with a clinician.