13/11/2025
Research shows poor dental health accelerates brain shrinkage in areas tied to memory and Alzheimer’s disease. The damage often starts with chronic gum inflammation, which can quietly affect the hippocampus — the brain’s main hub for learning and recall.
A Neurology study tracking 172 older adults for four years found that gum disease and tooth loss were strongly linked to faster hippocampal atrophy. MRI scans revealed that the combination of inflamed gums and missing teeth created the most rapid decline, suggesting oral inflammation may speed up cognitive aging.
The pattern was striking: in mild gum disease, losing teeth worsened brain shrinkage — but in severe disease, keeping infected teeth caused even greater harm. The takeaway is clear: preserving memory means preserving gum health. Consistent cleanings and early periodontal care may offer meaningful protection for long-term brain function.
📄 Source: Yamaguchi, S., et al. (2023). Neurology. July 5, 2023, American Academy of Neurology
