05/29/2026
Tooth loss may be linked to changes in brain health, researchers suggest.
Researchers analyzing data from more than 34,000 adults found that tooth loss was associated with a higher risk of cognitive impairment and dementia. The findings also suggested that the risk increased gradually as more teeth were lost.
Scientists believe several factors may help explain this connection. Missing teeth can reduce chewing efficiency, which may affect brain stimulation and nutrition over time. Gum disease — one of the leading causes of tooth loss — has also been linked to chronic inflammation that may influence overall health, including the brain.
Researchers additionally observed that older adults with missing teeth who used dentures had lower rates of cognitive impairment compared with those who did not use dentures.
While more research is still needed, the findings highlight the importance of protecting oral health throughout life — not only for the mouth, but potentially for healthy aging as well.
Source: NYU Rory Meyers College of Nursing | Published in JAMDA: The Journal of Post-Acute and Long-Term Care Medicine.
