Streptococcus is the most abundant bacterial genus in your mouth — about 1 in 3 of your oral bacteria. Some species in the genus protect oral health (S. salivarius, S. sanguinis); others cause cavities (S. mutans). Your panel reports the species individually — check the species-level rows for the most useful read.
Reduce free sugars (especially sucrose) and increase dietary fiber. Three months of higher fiber and less sugar shifts the Streptococcus community toward the protective species.
Prolonged grazing on fermentable carbohydrates and daily antiseptic mouthwash. Both encourage cavity-causing species and disrupt the broader oral community.
Species pages
Deeper writeups for individual species in this genus.
Synthesized from 13 peer-reviewed sources · Last updated May 2026
This information is for wellness purposes only and is not a medical assessment. Always consult a medical professional about any health concerns.