Good oral health is key to prevent and control diabetes


  • There is a bi-directional relationship between oral health and diabetes: people with periodontal disease have a 20-30% higher risk of developing diabetes.
  • Both diseases are highly prevalent: over 415 million people have diabetes and 750 million people have periodontal disease worldwide.
  • SUNSTAR, a holistic healthcare company, has been supporting research into the two-way relationship between oral health and diabetes for over 30 years.

There is a bi-directional relationship between oral health and diabetes: people with periodontal disease have a 20-30% higher risk of developing diabetes, and those who have diabetes are 1.5 times more likely to develop gum disease. The good news is that good oral health in people with diabetes can help reduce blood sugar levels. This is just one of the powerful links revealed by the ‘Perio & Diabetes Campaign’ that SUNSTAR and the European Federation of Periodontology (EFP) are launching today on World Diabetes Day.  (Scroll down to download the materials)

Approximately 80% of people over 30 years old have some form of gum disease (gingivitis in its mild form, and periodontitis in its severe form). This corresponds to 750 million people worldwide with gum problems. The situation is no more positive if we examine data for diabetes: 415 million people worldwide suffer from the disease and an estimated 212 million people are living with undiagnosed diabetes. 

In addition, these two diseases are strongly linked. If you suffer from both conditions at the same time, there is an increased risk of developing complications from diabetes earlier, since gum problems are inflammatory diseases that increase general inflammation in the body. In turn, this increases insulin resistance and leads to poorer blood sugar control. As a result, both disorders worsen and are harder to control. 

How can gum disease be prevented? 
According to experts, the first signs of gum disease include red or swollen gums, bleeding or blood after brushing, longer-looking teeth, and increased spaces between teeth. Whether or not some of these signs are spotted, basic oral care recommendations are to visit the dentist twice a year, brush twice a day, and pay extra attention to interdental brushing. As SUNSTAR experts explain, interdental hygiene cleans 85% of the mouth, while toothbrushes only clean 60%.

As Dr Marzia Massignani, Sr Manager Scientific Affairs and Corporate Comms at SUNSTAR, states: “Early diagnosis of both diabetes and periodontal disease is essential if we want to improve prevention and treatment. It is therefore vital to raise awareness about this existing relationship and provide useful tools to patients, professionals and people at risk.”

As a result, SUNSTAR is raising awareness through several activities, especially this month. Therefore, the company is launching the #BreakTheCycle campaign which encourages patients and professionals to take action and stop the bi-directional relationship existing between diabetes and periodontal disease.

In addition, SUNSTAR is also supporting pioneering research in the field that aims to detect undiagnosed diabetes or prediabetes conditions in the dental office. The primary objective is to establish a protocol that helps oral care professionals to identify signs of diabetes in their patients with gum problems. Another goal is to help improve coordination with physicians in order to detect and treat this global issue earlier. This project is led by the Complutense University in Madrid and supported by the Spanish Society of Periodoncy and Osseointegration (SEPA).

Over 30 years supporting research into the relationship between oral health and diabetes

The holistic healthcare company is not new to the field of oral health and diabetes. SUNSTAR has been promoting and supporting research for over 30 years now due to the personal story that links diabetes to the Kaneda family (the founders of the company). SUNSTAR’s founder, Kunio Kaneda, passed away due to a complication of diabetes in his fifties. In 1986, the company held the SUNSTAR Portside Symposium, where Hiro Kaneda, Kunio’s son, raised the question of a possible link between periodontal disease and systemic diseases. He suffers from both diseases and felt they were somehow connected. This was the first step towards the recognition of the relationship between oral health and general health.

Ever since, the company, through the Sunstar Foundation, has been contributing to research and raising awareness about the two-way relationship between oral health and general health, particularly about periodontal disease and diabetes. Under #ThePerioLink project, SUNSTAR is also giving visibility to the many impacts of poor oral health, spanning cancer to sports performance.

Download the ‘Perio&Diabetes’ project materials:


Oral Team




Oral Team



Policy Makers







Summary of the evidence linking periodontitis and diabetes

Summary of the effect of periodontitis on diabetes