The Connection Between Gingivitis and Alzheimer’s Disease

What is the connection between gingivitis and zlzheimer’s disease? Despite years of intensive research, Alzheimer’s Disease remains one of the medical world’s biggest mysteries.  There is no cure, and there is much debate about its root causes.  But is it possible that periodontal diseases such as Gingivitis could play a role?  Read on to find out the latest research.

Recent Studies

 In 2019, researchers at Broegelmanns Research Laboratory at the University of Bergen conducted an experiment to see if there was any correlation between Gingivitis and Alzheimer’s Disease1.  The study was based on a previous theory that presented strong evidence that bacteria in the gums could make its way to the brain.  Once the bacteria became present in the brain, it was theorized that it would begin to damage and even destroy nerve cells in the brain.  This damage to the brain would explain the severe cognitive decline experienced by patients suffering from Alzheimer’s.


DNA Evidence

 While the information above has been widely accepted, the 2019 study set out to conclusively prove the theory using DNA evidence.  They succeeded in doing so.  The study found that nearly 96% of patients with known cases of Gingivitis had damaging bacteria present in their brain tissue, spinal fluid, and saliva samples.


How Oral Health Impacts Cognitive Ability

 It may seem unlikely, but there is a surprising body of evidence suggesting that poor oral healthcare may lead to cognitive decline later in life.  Research by the National Institute of Aging has suggested that there is likely a correlation between gum disease and Dementia2.  Due to the troubling nature of these findings, researchers are continuing to investigate ways these findings may help in the search for a cure for Alzheimer’s Disease.


Preventive Measures

 Alzheimer’s Disease itself has no cure.  There are medications on the market, but they can only reduce symptoms at best.  And while periodontal diseases alone are not thought to be solely responsible for cognitive decline, it is clear that they can play a major role.  For this reason, patients should continue to take their oral healthcare regimens seriously and consult a dental practitioner if they believe they have developed Gingivitis.  As the search for a cure continues, patients can still take responsibility for their own oral healthcare and severely reduce their chances of experiencing Alzheimer’s Disease.



  1. Sergeant, D. J. (2022, May 13). Gingivitis associated with alzheimer’s risk. In Good Health Central New Yorks Healthcare Newspaper.  From
  2. U.S. Department of Health and Human Services. (n.d.). Large study links gum disease with dementia. National Institute on Aging. From

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