Gum disease bacteria linked to dementia brain changes, study claims

A study published today has revealed that people with poor dental hygiene are potentially at a greater risk of developing dementia.

The University of Central Lancashire’s School of Medicine and Dentistry made the discovery after examining brain samples donated by 10 people with the condition and 10 people without it. Researchers found the presence of porphyromonas gingivalis bacteria in the brains of people with dementia, leading them to suggest it could play a role in brain changes associated with the condition and that it could be linked with typical symptoms such as confusion and memory loss.

Commenting on the research, Dr Alison Cook, director of external affairs at the Alzheimer’s Society, said: “There have been a number of studies looking at the link between dementia and inflammation caused by factors including poor dental health, but this is not yet fully understood. This small study suggests that we need more research into this important area.

“The best way to reduce your risk of dementia is to lead a healthy lifestyle. Enjoy a balanced Mediterranean diet, rich in fruit and vegetables, oily fish and even the occasional glass of red wine – take regular exercise and don’t smoke. Of course, if people are worried, it never hurts to reach for the tooth brush twice a day.”