Diabetes Drug Metformin Could Stop Gum Disease And Aid Healthy Aging

Metformin, a type 2 diabetes medicine, showed potential to reduce inflammation and bone loss linked to gum disease in animal research and a small clinical trial. Researchers also observed improvements in blood glucose control and markers associated with ageing. However, the findings are preliminary, and metformin is not currently an approved standard treatment for periodontal disease or healthy ageing.

Diabetes Drug Metformin Could Stop Gum Disease And Aid Healthy Aging
Medically reviewed

Dr. Chrysoula I. Liakou MD, PhD Google Scholar LinkedIn

Internal Medicine Specialist
Cancer Immunology Researcher

Could Metformin Help Treat Gum Disease and Support Healthy Ageing?

  • Studies have shown that gum disease can impact various body parts, such as the heart and bones, despite being a mouth condition.

  • A recent study conducted by King's College London revealed that metformin, a medication commonly used to treat type 2 diabetes, could potentially improve clinical outcomes for individuals without diabetes who have gum disease.

  • The study also found that metformin might aid in preventing bone loss resulting from periodontal disease or ageing through mouse and clinical trials.


Did you know that almost 1 out of 5 adults worldwide has a severe gum disease? It's a condition where the tissues that hold our teeth in place get infected and left untreated; it can cause damage to bones in our mouth and lead to tooth loss.


But that's not all. Gum disease can also affect our overall health in other ways. Studies have shown that it can increase the risk of heart disease, Alzheimer's, diabetes, and respiratory disease.


However, King's College London researchers have found that a commonly prescribed diabetic drug can help improve the health of people with gum disease, even if they don't. This drug can also help prevent bone loss caused by either gum disease or ageing, as shown in both mouse and clinical trials.



Using Metformin To Treat Gum Disease


This study focused on using metformin, a common type 2 diabetes drug, as its primary focus. The study results were published in the Faculty of Dentistry, Oral & Craniofacial Sciences at King's College London.


Previous research has shown that metformin, a medication commonly used to treat diabetes, has anti-inflammatory properties that can protect against various conditions like cancer, heart disease, and liver disease.


Some recent studies have also suggested that metformin may have anti-ageing effects and can help reduce the risk of age-related diseases.


A new study found that metformin can reduce the levels of AGEs, which are markers of ageing, by improving insulin sensitivity and lowering blood glucose levels.



Metformin Helps Control Inflammation.


Initially, metformin was evaluated in a mouse model of periodontal disease. Results revealed that metformin effectively prevented bone loss during induced periodontal disease and age-related bone loss in living mice.


Researchers were surprised to find that metformin significantly improved the health of ageing individuals and prevented 50% of bone loss. Subsequently, a clinical trial involving 20 participants with gum disease but without diabetes demonstrated that metformin improved clinical outcomes in gum disease treatment.


Furthermore, metformin effectively managed sugar levels and reduced inflammation in both the mouth and the body, even in high bacteria levels.



Improving Ageing With Metformin


Preventive measures against gum disease may need to go beyond conventional oral hygiene practices, such as tooth brushing. Both animal and patient data have shown positive outcomes with metformin, even in high levels of oral bacteria. This prompts the question of whether alternative approaches are needed to prevent gum disease development.


Furthermore, the clinical data indicates that metformin could enhance the overall health of individuals with gum disease. This is attributed to its ability to stabilize glucose levels, improve insulin sensitivity, and control inflammation. These markers are directly linked to improving ageing, suggesting that preventing systemic diseases originating from the mouth could be a promising strategy for preventing overall systemic diseases.



How Does Gum Disease Happen?


When we don't care for our teeth, bacteria can gather and form a sticky substance called plaque.


The result can be gum disease, which can lead to tooth loss. We can remove most plaque by brushing our teeth twice daily and flossing daily.


Professional dental cleaning is the only way to remove it if you don't remove it.


If we don't treat gum disease, the infection can spread to the tissues around our teeth, which can cause bone and tooth loss.



How Is Periodontal Disease Treated?


Preventing periodontal disease is the best way to keep your teeth healthy. Regular brushing and flossing will help you achieve this, as will regular checkups and cleanings at the dentist every six months.


If you already have periodontal disease, a deep cleaning may be recommended to remove plaque beneath your gums. In more severe cases, you might need medication or surgery to treat the disease.


In the current dental practice, the primary treatment approach for gum disease revolves around oral hygiene, teeth cleaning, and antibiotic therapy. These methods primarily target plaque control, consisting of bacteria and food debris accumulating around the teeth.


The existing treatments for gum disease primarily address the bacterial aspect of the issue while overlooking the role of inflammation. Moreover, these treatments do not contribute to the prevention of other non-communicable diseases. Therefore, there is a need for the development of innovative therapies and healthcare approaches that consider gum disease patients as candidates for other non-communicable diseases. This approach has the potential to reduce the global disease burden and foster the emergence of a healthier geriatric generation.



How Does Gum Disease Affect Ageing?


Research has found that gum disease can affect a person's overall health and speed up ageing. This disease is also linked to chronic inflammation associated with ageing.


Some health problems like diabetes, obesity, and cognitive decline tend to show up later in life, but gum disease can start as early as age 30 for most people. These issues, including gum disease, are non-communicable diseases which develop gradually over time. Studies show that people with gum disease are more likely to have other related health problems. By treating gum disease from a broader perspective, we can prevent other non-communicable diseases that develop over time.



The Mouth: A Window Into The Body’s Health


Upon reviewing this study, a specialist treating periodontal disease found the research intriguing. However, it's crucial to note that these findings are preliminary and come with several caveats, primarily because most results stem from animal studies.


Further research involving larger and more diverse populations is necessary. Additionally, since the researchers suggest off-label use of a drug approved by the authorities solely for improving glycemic control in people with type 2 diabetes, more data must be collected regarding any adverse reactions that may occur when the drug is used in people with normal glycemic levels.


In terms of overall health, the mouth's condition can serve as a window into the body's health. It's essential to recognize that various systemic conditions and diseases, such as heart disease and diabetes, can impact oral health directly or due to physical challenges in maintaining proper oral hygiene.


Periodontal and systemic diseases share several common risk factors, including smoking and a poor diet. Therefore, taking care of one's oral health, which includes regular brushing, daily interdental cleaning, and routine dental visits, is essential for healthier ageing.


Mobi Doctor can provide guidance and support for improving oral health and overall well-being. Whether you need advice on oral hygiene practices, managing systemic conditions that impact oral health, or information on healthier ageing, Mobi Doctor is here to assist you.



Metformin, Gum Disease and Healthy Ageing FAQs

The study found that metformin reduced inflammation and improved clinical measures of gum disease. In mice, it limited periodontal and age-related bone loss; in a clinical trial involving 20 people with gum disease but no diabetes, it improved treatment outcomes and helped regulate glucose levels. The findings suggest potential but do not establish metformin as routine periodontal treatment.

Metformin could help periodontal disease by addressing inflammation as well as blood glucose regulation. Researchers reported lower inflammation in the mouth and elsewhere in the body, even when bacterial levels remained high. This differs from conventional approaches that primarily control plaque and bacteria, although oral hygiene and professional dental treatment remain essential.

The evidence is promising but preliminary. Much of the research came from mouse models, while the human clinical trial included only 20 participants without diabetes. Larger and more diverse studies are needed to confirm effectiveness, determine appropriate doses and assess adverse reactions in people with normal blood glucose before metformin could become an accepted periodontal treatment.

Metformin reduced bone loss linked to periodontal disease in the animal study and was reported to prevent around half of the bone loss observed in ageing mice. This is encouraging because advanced gum disease can damage the tissues and bone supporting the teeth. However, results from animal studies cannot be assumed to produce the same outcome in people.

Metformin is being studied for possible healthy-ageing effects because it improves insulin sensitivity, stabilises blood glucose and reduces inflammation. The research also linked it with lower levels of advanced glycation end products, or AGEs, which are associated with ageing. These findings remain investigational and do not prove that metformin prevents ageing or age-related disease.

Metformin should not be taken solely for gum disease or anti-ageing without an appropriate prescription and medical oversight. It is approved for improving blood glucose control in people with type 2 diabetes; using it for periodontal disease or healthy ageing would be off-label. Evidence remains limited, particularly regarding adverse effects in people with normal glucose levels.

Periodontal disease is usually managed by controlling plaque and treating infection and inflammation around the gums. Daily brushing and interdental cleaning are essential, while a dentist may recommend professional cleaning or deep cleaning below the gumline. More advanced disease can require medication or surgery, depending on the extent of tissue and bone damage.

Gum disease creates chronic inflammation that may affect more than the mouth. The article describes associations with heart disease, diabetes, respiratory disease, cognitive decline and age-related health problems, although an association does not prove direct causation. Preventing tooth and bone loss while controlling inflammation may therefore support both oral health and healthier ageing.


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