Oral health: the missing link in the conversation about longevity

Longevity is, today, more than just a trend. It is a paradigm shift. In recent years, the global conversation has shifted from ‘how long we live’ to ‘how we live’ – the concept of ‘healthy ageing’. And in this context, a truth that was, until recently, underestimated is becoming increasingly clear: oral health is an integral part of longevity.

When we think about living a longer and healthier life, we usually focus on nutrition, exercise and, perhaps, regular check-ups with our GP. However, international studies show that the link between oral health and the health of the whole body is deeper than it seems at first glance. 

Chronic inflammation, oral infections or tooth loss are not just localised problems, but can influence the progression of systemic conditions and, consequently, life expectancy. 

In this context, prevention, dental hygiene and regular visits to the dentist are not just about protecting our teeth, but a real investment in our long-term health.

In my 30-plus years of experience in dentistry, I have noticed that many of us believe that the health of our teeth and gums only affects the oral cavity. Clinical evidence and recent studies show exactly the opposite.

The link between whole-body health and oral health has a solid biological basis and is not merely a coincidence. Recent studies show that the health of our teeth and gums directly influences key determinants of longevity, such as nutrition, systemic inflammation and the risk of chronic diseases.

Today, we know for certain that bacteria in the oral cavity can enter the bloodstream, fuelling silent chronic inflammation throughout the body. Furthermore, tooth loss and periodontal disease are risk factors directly associated with cardiovascular disease, diabetes, neurodegenerative conditions such as Alzheimer’s, and, more recently, with an increased risk of premature death.

Understanding these connections is essential for an integrated approach to health. At DENT ESTET, our mission is to treat the root causes of these imbalances, providing patients with a solid foundation for a long and active life.

Although often overlooked, the link between dental disease and cardiovascular health is underpinned by a rigorous biological mechanism. When we are faced with serious tooth decay or periodontitis, ‘pockets’ of infection form around these areas, where bacteria multiply unchecked.

Through everyday activities, such as chewing or daily brushing, these bacteria manage to pass through the gum barrier and enter the bloodstream – a phenomenon known as bacteraemia. Once in the blood, these microorganisms trigger inflammatory reactions that attack the walls of blood vessels.

In the long term, the result is a progressive increase in the risk of major cardiovascular events, such as heart attack or stroke. 

Periodontitis is one of the most common chronic conditions and, at the same time, one of the most dangerous in the long term. In its early stages, it manifests as inflammation and bleeding of the gums. If left untreated, it can lead to bone and tooth loss, as well as systemic complications.

Find out the causes of periodontal disease

On the other hand, atherosclerotic disease, with manifestations such as heart attack and stroke, is one of the leading causes of death worldwide. And the disease is inflammatory, not just metabolic.

For this reason, the chronic inflammation associated with periodontitis can affect the immune system and have an impact on the heart, blood vessels and other organs.

A large-scale study published in 2003 showed that periodontal disease appears to be associated with a 19% increase in the risk of developing cardiovascular disease. This increase is more pronounced in people aged up to 65, at 44%.

The link between periodontitis and diabetes has been demonstrated by numerous studies, and this relationship is bidirectional. This means that diabetes promotes the onset and progression of periodontal disease, whilst periodontitis, in turn, makes it more difficult to control blood sugar levels.

The explanation is simple: high blood sugar levels affect blood flow to the gums and reduce the body’s ability to fight infections. At the same time, the chronic inflammation associated with periodontitis increases insulin resistance and can lead to fluctuations in blood sugar levels.

For this reason, periodontal disease is often considered a major complication of diabetes.

However, there is some good news. Studies show that effective treatment of periodontal disease, using laser dentistry, can help improve blood sugar control.

Beyond its cardiovascular impact, recent research is exploring the influence of periodontitis on neurodegenerative diseases. Clinical studies suggest that chronic inflammation of the gums may act as a catalyst for degenerative processes in the brain.

Indeed, oral pathogens – such as Porphyromonas gingivalis – have been identified in the brain tissue of patients diagnosed with Alzheimer’s disease.

That is why timely treatment of dental problems is not just a routine medical procedure, but becomes an essential form of protection for our brain health as we age.

Recent research carried out at Osaka University suggests that the number of missing teeth is an indicator of the risk of premature death. An analysis of over 190,000 medical records showed that healthy and treated teeth are associated with a lower risk of mortality.  Conversely, a higher number of missing or decayed teeth was linked to an increased risk of mortality.

This link between oral health and longevity was confirmed by another large-scale study, conducted in Japan and published in October 2025 in the journal Geriatrics & Gerontology International. 

The research followed 11,000 adults for six years, demonstrating that ‘oral frailty’ (difficulties with chewing, swallowing and missing teeth) has an alarming impact. People facing such problems had a 23% higher risk of transitioning from optimal health to disability and, more seriously, a 34% higher risk of mortality.

These figures highlight the fact that maintaining optimal oral function, by replacing missing teeth with modern solutions such as dental implants, is not merely an aesthetic choice, but an essential measure for preserving long-term general health.

Effective chewing is the first step in the digestive process. When dental health is compromised, the quality of our diet inevitably declines, as we instinctively avoid nutrient-rich foods such as raw vegetables or high-quality proteins.

From my clinical experience, I have seen how restoring dental function radically changes one’s lifestyle. A full set of teeth allows for a varied diet, providing the body with the fuel it needs to prevent chronic diseases. Ultimately, longevity depends directly on our ability to eat properly, a process that begins with optimal oral health.

The data shows that people who visit the dentist regularly gain approximately one extra year of healthy life, regardless of the initial condition of their teeth.

This confirms that continuous monitoring acts as a pillar of support for general health, providing the body with the resilience needed in later life.

At DENT ESTET, we have championed the idea that prevention goes beyond mere hygiene. Rigorous check-ups enable the early identification of serious conditions, ranging from bone loss to early signs of oral cancer. Intervention at an early stage not only simplifies treatment but also eliminates the risk of systemic complications that can affect the heart, joints or metabolism.