Health · Medical Research · 1 day ago
Tooth loss linked to higher risk of cognitive decline in older adults
A review of 14 studies found that older adults who had lost more than one tooth had nearly 50% higher risk of cognitive decline.
The same group had 28% higher odds of receiving a dementia diagnosis.
The review, published in the journal JAMDA, examined links between tooth loss and brain health in older adults.
It does not show that losing teeth causes cognitive decline or dementia.
Other factors may also play a role, including long-term inflammation, diet, access to dental care and existing illnesses.
Gum disease can progress and lead to tooth loss, so regular dental checkups and daily oral hygiene can help prevent problems in the mouth.
The guidance recommends a dental visit every six months for an examination and cleaning, with X-rays when needed.
A review of 14 studies published in the journal JAMDA found that older adults who had lost more than one tooth had nearly a 50% higher risk of cognitive decline.
The review also found that this group was 28% more likely to receive a dementia diagnosis.
The authors said the findings show an association, not proof that tooth loss directly causes cognitive decline or dementia.
Other factors may contribute, including prolonged inflammation, diet, access to dental care and existing illnesses.
Harvard Health Publishing recommends regular dental checkups, including an examination and cleaning every six months, and brushing at least twice a day.
- Who
- Older adults and the authors of a review of 14 studies
- What
- A review found an association between losing more than one tooth and higher risks of cognitive decline and dementia
- When
- The article was published on October 10, 2026; the review's date is not stated
- Where
- Not stated
- Why
- The findings highlight a possible link between tooth loss and cognitive health and the importance of dental care; they do not establish that tooth loss causes cognitive decline.
This story does not have two clearly opposing sides.
No direct quotes in the coverage so far.
This story does not have a timeline yet.
- Studies in review
- 14
- Cognitive decline risk
- Nearly 50% higher among older adults who had lost more than one tooth
- Dementia diagnosis likelihood
- 28% higher in the same group
- Recommended dental checkup interval
- Every six months, according to Harvard Health Publishing
- Recommended brushing frequency
- At least twice a day for two minutes











