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Tooth loss linked to increased risk of dementia

Older people who have less teeth have an increased risk of developing dementia, new study results suggest. 
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Older people who have less teeth have an increased risk of developing dementia, new study results suggest.

Researchers in Japan studied 1,566 community-dwelling Japanese adults aged 60 and over, who were followed up for five years from 2007 to 2012. During this time, 180 of the study participants developed all-cause dementia; 127 had Alzheimer's disease and 42 developed vascular dementia.

After adjusting for confounding factors, the researchers found that those with one to nine teeth had an 81% increased risk of developing dementia compared to those with more than 20 teeth.

Clinical importance

For people with ten to 19 teeth the increased risk was 62%, and for those with no teeth it was 63%, compared to people with

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