10-Year Japanese Study Links Bleeding, Receding Gums to Higher Dementia Risk
Kyushu University researchers tracked nearly 1,400 adults and found the worst gum bleeding, recession and pocket depth each predicted substantially higher odds of all-cause dementia.
What to know
- A 10-year observational study of nearly 1,400 adults in Japan found worse gum bleeding, recession, and pocket depth linked to 56%, 59%, and 72% higher all-cause dementia risk respectively.
- The study is observational and cannot prove causation; researchers propose systemic inflammation and oral pathogens reaching the brain as possible mechanisms.
- Vascular dementia cases (51) were far fewer than all-cause dementia cases (267), limiting analysis of which dementia subtypes are most affected.
- Over 40% of US adults over 30 have gum disease, meaning the association, if causal, could have broad public health implications.
Personal oral hygiene changes can visibly improve gum health and may reduce this risk.
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“The baking soda completely fixes my gingivitis and has stopped plaque build up. I only brush with it once a week and I use a sls free fluoride toothpaste the rest of the week.”
Angry_Sparrow · r/science ↗
If gum disease drives dementia risk, periodontal treatment should be treated as necessary medical care and fully insured.
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“Therefore periodontal treatment is medically necessary preventive treatment, and should be covered at 100% by medical insurance”
TheMaStif · r/science ↗
The findings raise deeper unresolved questions about consciousness and personal identity in dementia and brain restoration.
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“Anf if it even possible to transfer and retain the original person even if we can recreate a brain or something.”
dudeman_joe · r/science ↗
“Until not that long ago, most people, including myself, did not think that the immune response was even involved in neurodegenerative diseases that are due to protein accumulation in the brain.”
David Holtzman, Neurologist, Washington University in St. Louis · ScienceAlert ↗ · Sep 16
Michiko Furuta Dental scientist, Kyushu UniversityDavid Holtzman Neurologist, Washington University in St. Louis
How it unfolded 4 developments, newest first · click a bar or a number to jump articlespostscomments
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Story reaches Hacker News front page
The ScienceAlert piece was submitted to Hacker News and gained modest traction, extending the story's reach without new commentary recorded in this batch.
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The association is interesting, but bleeding gums don’t mean someone is destined to develop Alzheimer’s. This was observational research, so causation hasn’t been established. Still, persistent gum bleeding is worth treating, because good oral health is part of overall health too.
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Reddit thread on r/science discusses the findings
User mvea posted the ScienceAlert story to Reddit, prompting comments ranging from personal oral-hygiene routines to calls for periodontal treatment to be covered by medical insurance and a tangent on consciousness in dementia.
“Therefore periodontal treatment is medically necessary preventive treatment, and should be covered at 100% by medical insurance…”
— TheMaStif, Reddit commenter · source -
I started using a baking soda toothpaste this year because I got PoD around my mouth ( very common for perimenopausal women) and had to remove all SLS and sulphate from my skincare routine, including toothpaste. Well holy hell. The baking soda completely fixes my gingivitis and has stopped plaque build up. I only brush with it once a week and I…
2 more of the top 3 · 4 posts in this stretch
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Therefore periodontal treatment is medically necessary preventive treatment, and should be covered at 100% by medical insurance
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Anf if it even possible to transfer and retain the original person even if we can recreate a brain or something.
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2
Coverage of the study spreads across international outlets
The findings were picked up by The Independent, GIGAZINE, Qatar News Agency, Fana News and others within the same hour, framing the gum condition as a marker that could raise dementia risk by over 50 percent.
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first by The Independent, 7d ago
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ScienceAlert reports Kyushu University's 10-year gum-dementia study
The outlet detailed a decade-long observational study of nearly 1,400 adults in Japan showing that worse gum bleeding, recession, and pocket depth were linked to 56%, 59%, and 72% higher risk of all-cause dementia respectively, compared to those with the healthiest gums.
“These findings support a potential role of poor periodontal health in dementia development.”
— Michiko Furuta and co-authors -
first by Fana News -, 7d ago
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first by ScienceAlert, 7d ago
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Also covered reported alongside — the timeline has no entry for these yet
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first by GIGAZINE, 7d ago · also ScienceAlert
1 more headline
- Common Gum Problem Is Linked to a 61% Higher Alzheimer's Risk ScienceAlert · 7d ago
What people are saying 1 voices from 1 site · best of 5 · verbatim
- Sep 17
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You gotta define consciousness first. Some Animals and Insects show signs of consciousness.