Home›Primary Care & Family Medicine› Tooth loss linked to higher risks of cardiovascular disease, cancer, and dementia in umbrella review
Tooth loss linked to higher risks of cardiovascular disease, cancer, and dementia in umbrella reviewLosing teeth may increase risk for heart disease and cancer
Frontiers in MedicinePublished August 17, 2026DOI ↗Editorial oversight: Dr. Sofia Müller, MD · Lifespan & Whole-Person Care
AI-generated summary of the cited source, checked by automated accuracy review.
How we work
Share
Key Takeaway
Consider oral health as part of holistic risk assessment for systemic diseases, but interpret associations cautiously given low evidence quality.
This umbrella review synthesizes evidence from multiple meta-analyses of observational studies to assess the link between tooth loss and systemic health outcomes. The scope covers a wide range of conditions, including cardiovascular diseases, cancer, neurodegenerative diseases, metabolic disorders, mental disorders, and respiratory diseases. The primary outcome was the association between tooth loss and these systemic health outcomes, with secondary outcomes including all-cause mortality and specific cancers such as esophageal, lung, and colorectal cancer, as well as cognitive decline and dementia.
Key findings from the dose-response analyses revealed incremental risks with increasing numbers of teeth lost for cardiovascular diseases, all-cause mortality, esophageal cancer, lung cancer, colorectal cancer, cognitive decline, and dementia. However, the review did not report specific effect sizes, absolute numbers, or confidence intervals, and the direction of association was consistently increased risk.
The authors note several limitations, including predominantly low or very low evidence quality, significant heterogeneity across studies, and potential biases. These limitations underscore the need for cautious interpretation of the findings. The association is based on meta-analyses of observational studies, so causality cannot be inferred.
From a practice perspective, the review suggests that oral health and holistic health management, especially among older adults, should be considered to help reduce the risk of various systemic illnesses. However, given the low certainty of evidence, clinicians should interpret these findings as hypothesis-generating rather than definitive, and consider oral health as part of overall health assessment.
How this fits prior evidence
This umbrella review extends prior coverage on systemic risk factors by linking oral health, specifically tooth loss, to multiple chronic diseases. It confirms and broadens earlier findings on sarcopenia and dysphagia risk in cancer patients, suggesting that poor oral health may similarly contribute to adverse outcomes. The dose-response relationship aligns with the graded associations seen in prior meta-analyses on wasting and chemotherapy toxicity. However, the low evidence quality and observational nature contrast with the more robust data from ongoing trials, such as the clinician-guided action plans for childhood cancer survivors, which are still in protocol phase.
Your oral health might be more connected to your overall well-being than you realize. A large review of previous studies found that losing teeth is linked to several serious health issues. Specifically, as the number of missing teeth increases, the risk for heart disease and certain types of cancer grows.
The research also looked at how tooth loss relates to brain health. The data showed an increased risk for cognitive decline and dementia in people with fewer teeth. These findings suggest that maintaining your teeth could be a key part of managing your general health as you age.
It is important to note that these results come from observational studies, which show links rather than direct causes. Most of the evidence was also considered low quality or inconsistent. While the connection is clear, the exact reasons why this happens are still being studied.
What this means for you:
Losing more teeth is linked to higher risks for heart disease, cancer, and memory loss.
Common questions
What specific health problems are linked to tooth loss?
The research found a link between losing teeth and several serious conditions. These include cardiovascular diseases, all-cause mortality, and certain cancers like esophageal, lung, and colorectal cancer. It also showed a connection to mental disorders and respiratory diseases.
Does losing teeth affect brain health?
Yes, the study found that as the number of lost teeth increases, there is an increased risk for cognitive decline and dementia. These findings suggest that oral health may play a role in maintaining mental clarity.
How strong is the evidence connecting tooth loss to these diseases?
The evidence was noted as predominantly low or very low quality. Because the study relied on observational data rather than clinical trials, it shows an association between the two factors rather than a proven cause.
ObjectivesEvidence linking tooth loss to various systemic health consequences is summarized and evaluated in this umbrella review. Evidence gaps are identified, and recommendations for the development of public oral health measures are provided.MethodsThis prospective registered umbrella review was conducted in accordance with the PRISMA guidelines. To identify meta-analyses of observational studies that have explored the link between tooth loss and systemic health outcomes, systematic literature searches were conducted in PubMed, the Web of Science, MEDLINE, and the Cochrane Library from the inception of the databases through September 2025. Methodological quality and evidence strength were evaluated using AMSTAR-2, GRADE, and credibility assessments.ResultsAn examination of 27 meta-analyses containing 40 distinct estimates revealed that tooth loss was linked to increased risks of cardiovascular diseases, several types of cancer, neurodegenerative diseases, metabolic disorders, mental disorders, and respiratory diseases. Dose–response analyses revealed incremental risks with increasing numbers of teeth lost for several outcomes, including cardiovascular diseases, all-cause mortality, esophageal cancer, lung cancer, colorectal cancer, cognitive decline, and dementia. However, the comprehensive evidence quality was predominantly rated as low or very low, with significant heterogeneity and potential biases noted.ConclusionThis umbrella review synthesizes evidence demonstrating that tooth loss is consistently linked to increased risks of multiple detrimental health consequences, underscoring its importance in systemic health rather than merely being a local dental issue. Oral health and holistic health management, especially among older adults people, should be considered to help reduce the risk of various systemic illnesses.Systematic review registrationhttps://www.crd.york.ac.uk/PROSPERO/view/CRD420251149566
