1. Oral bacteria may influence cognitive function in older adults.
2. Study involved 60 healthy adults and 55 with MCI.
3. Higher Neisseria and Haemophilus linked to better cognitive performance.
4. Prevotella intermedia associated with lower cognitive scores.
5. Nitric oxide metabolism could be affected by oral microbiome.
6. Dietary intake was not controlled as a factor.
7. Most participants were women, limiting generalizability.
8. Future research needed for precise sequencing methods.

Source: PNAS Nexus