Dental health and dementia are not commonly thought of together. What does dental health have to do with mental health, anyway? Surprisingly, there seems to be a strong link between these two.

In fact, if your gums bleed easily, then you might have a gingivitis infection. New research has showed that gingivitis bacteria make it into the brain. Once inside, the brain produces β-amyloid proteins as a defence against the bacteria, and it is exactly the buildup of these proteins that cause neural breakdown that cause Alzheimer’s – a major cause of dementia.

A research team recently compared 50 brain samples of deceased Alzheimer’s patients to 50 healthy samples, finding that over 90% of Alzheimer’s samples contained P. gingivalis. Similar findings were observed with live patients through spinal fluid drawing.

The idea that gingivitis can cause Alzheimer’s was then tested by rubbing the bacteria on the teeth of mice, where sure enough, over time the mice started to develop the memory-robbing disease. This is truly a remarkable finding, potentially identifying a way to drastically reduce the risk of the disease through simply promoting good dental health.

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