---
title: "Periodontitis bacteria and heart valves: link to calcific aortic valve stenosis (CAVS)"
id: "medical-news-today-1-how-the-bacteria-behind-gum-disease-can-affect-heart-health"
canonical_url: "https://medichelpline.com/clinical-feed/medical-news-today-1-how-the-bacteria-behind-gum-disease-can-affect-heart-health"
content_type: "clinical_feed_article"
specialty: "Dentistry"
source_name: "Medical News Today"
source_url: "https://www.medicalnewstoday.com/articles/how-periodontitis-bacteria-behind-gum-disease-can-affect-heart-health-valve-disease/"
published_at: "2026-07-20T10:00:00.000Z"
evidence_level: "Verified Feed"
license: "CC-BY-NC-4.0 / Informational Use"
---
# Periodontitis bacteria and heart valves: link to calcific aortic valve stenosis (CAVS)
## Provenance & Clinical Metadata
- **Canonical URL:** https://medichelpline.com/clinical-feed/medical-news-today-1-how-the-bacteria-behind-gum-disease-can-affect-heart-health
- **Specialty:** [Dentistry](https://medichelpline.com/clinical-feed/dentistry.md)
- **Primary Source:** Medical News Today
- **Source URL:** [Original Journal Publication](https://www.medicalnewstoday.com/articles/how-periodontitis-bacteria-behind-gum-disease-can-affect-heart-health-valve-disease/)
- **Published At:** 2026-07-20T10:00:00.000Z
- **Evidence Rating:** Verified Feed
## Executive GIST (TL;DR)
- Periodontitis is a severe form of periodontal disease that damages the tissues and bone supporting teeth and affects about 1 billion people worldwide, per the World Health Organization. - Bacteria from periodontal disease can enter the bloodstream during routine activities and have been associated with systemic conditions including cardiovascular disease, rheumatoid arthritis, pneumonia, diabetes, and Alzheimer’s disease. - A new study presented at the American Heart Association Basic Cardiovascular Sciences Scientific Sessions 2026 investigated whether **Porphyromonas gingivalis (P. gingivalis)** contributes to **calcific aortic valve stenosis (CAVS)**, a common valve disease in older adults that lacks effective medical prevention. - Researchers used human valve tissue and a mouse model; repeated systemic exposure to live **P. gingivalis** in mice led to bacterial accumulation in aortic valves, increased valve calcification, and signs of **aortic stenosis**. - The study observed that preventive antibiotic treatment reduced bacterial accumulation and attenuated valve calcification in the model, but authors cautioned this does not prove antibiotics prevent CAVS in humans. - Investigators propose that infection-related inflammation, including IL-1β signaling pathways, may be a therapeutic target to prevent or slow CAVS progression; further validation in larger clinical cohorts is planned. - Independent clinicians noted the findings align with established links between oral inflammation and atherosclerosis and emphasized the need for larger human studies to assess causation and potential interventions. - Experts highlighted clinical implications: improving oral health may matter beyond teeth, and future trials could test whether aggressive periodontal treatment or targeted therapies against **P. gingivalis** affect valve disease progression. - The American Academy of Periodontology recommends routine oral hygiene, interdental cleaning, antibacterial mouthwash, awareness of risk factors, and annual periodontal evaluations to prevent periodontitis. - The study is preliminary and primarily based on animal models; the source notes that details such as study size, exact methods, and statistical outcomes were described in the conference presentation rather than fully reported in this summary.
## Clinical Analysis & Structured Key Points
Health Conditions Health Products Discover Tools Connect SUBSCRIBE HUMAN BIOLOGY Nervous system Cardiovascular system Respiratory system Digestive system Immune system How the bacteria behind gum disease can affect heart health Share on Pinterest Could oral health, and in particular bacteria in the mouth, affect future heart health? Image credit: mixetto/Getty Images Periodontitis is a severe periodontal disease that can damage the tissues and bone supporting the teeth. Past studies show that periodontitis can increase a person’s risk for several health conditions, including cardiovascular diseases. A new study has found a link between periodontitis and a cardiovascular condition called calcific aortic valve stenosis (CAVS). According to the World Health Organization (WHO), an estimated 1 billion people Trusted Source around the globe are living with a severe periodontal disease Trusted Source . Periodontal disease is an umbrella term for a group of inflammatory conditions that affect your teeth, gums, and surrounding tissues. One type of periodontal disease is the gum disease periodontitis, which can cause damage to the tissues and bone supporting your teeth. When a person has periodontitis, bacteria that enter the gums can spread into the bloodstream, allowing them to reach all parts of the body. Past studies show that periodontitis can increase a person’s risk for several health conditions, including rheumatoid arthritis, pneumonia, diabetes, Alzheimer’s disease, and cardiovascular disease. Now, a new study presented at the American Heart Association’s Basic Cardiovascular Sciences Scientific Sessions 2026 Trusted Source has found a link between periodontitis and a cardiovascular condition called calcific aortic valve stenosis (CAVS), which can ultimately restrict blood flow from the heart and throughout the body. Looking for a link between periodontitis and valve disease For this study, researchers used several methods, including human heart tissue and a mouse model, to search for a potential link between periodontitis and CAVS. “CAVS is the most common valvular heart disease in older adults, affecting approximately 2%–7% of people over the age of 65,” Chenyang Li, MD, a PhD candidate in the Department of Cardiology in Fuwai Hospital at the National Center for Cardiovascular Diseases at the Chinese Academy of Medical Sciences and Peking Union Medical College in China, and co-first author of this study, told Medical News Today. “Currently, no medications have been proven to prevent or slow its progression, and once severe stenosis develops, valve replacement is often the only effective treatment. Therefore, identifying modifiable risk factors and understanding the mechanisms driving valve calcification could open new opportunities for prevention and early intervention, potentially reducing the need for invasive procedures.” — Chenyang Li, MD Li said he and his team decided to look for a potential link between periodontitis and CAVS, as chronic inflammation is recognized as a key driver of CAVS. “Porphyromonas gingivalis (P. gingivalis), one of the major bacteria responsible for periodontal disease, can enter the bloodstream during routine activities such as brushing or chewing in people with poor oral health, and has been associated with several cardiovascular diseases,” he explained. “Previous studies detected P. gingivalis DNA in calcified human aortic valves, but whether this bacterium directly contributes to valve calcification remained unclear. We wanted to investigate this potential biological connection,” he said. Gum disease bacteria linked to increased heart symptoms At the study’s conclusion, researchers found that repeated exposure of live P. gingivalis in mice led to bacterial accumulation in the aortic valves and increased valve calcification and symptoms of aortic stenosis. Additionally, the P. gingivalis prevented the effects from being reduced when antibiotics were administered. “Our findings suggest that repeated systemic exposure to P. gingivalis may actively contribute to the development of CAVS rather than simply being an incidental finding. We also observed that preventive antibiotic treatment reduced bacterial accumulation in the aortic valves and attenuated valve calcification, further supporting the possibility that bacterial infection promotes disease progression.” — Chenyang Li, MD “However, our study was conducted in animal models, so these findings should not be interpreted as evidence that antibiotics can prevent CAVS in humans,” Li continued. “Instead, they suggest that infection-related inflammation may represent a potential therapeutic target that warrants further investigation.” “Our next step is to validate these findings in larger clinical cohorts,” he added. “We also plan to explore whether interventions targeting infection-related inflammatory pathways, particularly IL-1β Trusted Source signaling, may represent a promising strategy for preventing or slowing the progression of calcific aortic valve disease.” HEALTHLINE NEWSLETTER Get our free heart-healthy recipes We rounded up a few nutritious recipes for you to try next time you need inspiration in the kitchen. Join our heart health newsletter for your free recipes and expert guidance once a week. Enter your email JOIN NOW Your privacy is important to us How gum disease leads to heart inflammation MNT spoke with Yu-Ming Ni, MD, a board certified cardiologist and lipidologist at MemorialCare Heart and Vascular Institute at Orange Coast Medical Center in Fountain Valley, CA, who was not involved in this study. Ni commented that these findings are consistent with what we already know about the connection between oral health and cardiovascular disease. “Periodontal (gum) disease has long been associated with a higher risk of atherosclerosis, the buildup of plaque in the arteries, largely due to chronic inflammation. Over time, this inflammation can accelerate the deposition of fatty material in artery walls, increasing the risk of serious events like heart attack and stroke.” — Yu-Ming Ni, MD “What makes this study especially compelling is the potential link between gum disease and CAVS,” Ni continued. “While this connection may sound surprising, it aligns with the broader understanding that inflammation plays a central role in many forms of cardiovascular disease. Compared to conditions like heart attack and stroke, we still have far less guidance on how to prevent valve disease,” he said. Why oral health matters beyond just teeth Jason M. Auerbach, DDS, an oral and maxillofacial surgeon at Riverside Oral Surgery in New Jersey, and founder and CEO of MAX Surgical Specialty Management, who was likewise not involved in this research, said his first reaction to the findings was that this could make sense. “We’ve known for years that the mouth isn’t separate from the rest of the body,” Auerbach explained. “Gum disease creates chronic inflammation, and we’re continuing to uncover how inflammation can affect overall health.” “What’s interesting about this study is that it suggests a possible pathway linking the bacteria that cause periodontal disease to calcification of the aortic valve,” he continued. “It’s still really early research, so I wouldn’t and can’t say that gum disease causes valve disease, but it is another reminder that taking care of your mouth is about much more than keeping your teeth,” he said. Opening up potential for new treatments MNT also spoke with Craig Basman, MD, an interventional cardiologist at Hackensack University Medical Center, who was not involved in this study, who said that this research opens several exciting avenues for future research. “Mainly: can we establish causation between P. gingivalis and the progression of CAVS in a diverse human population?” he detailed. “And if so, does treatment — whether antibiotics or anti-inflammatory IL-1β inhibition — prevent that progression?” “We need larger, long-term observational studies to confirm the association between P. gingivalis and the progression of CAVS in a diverse human population,” Basman continued. “The most exciting prospect is the potential for new treatments. I would be very interested in clinical trials investigating whether aggressive treatment of periodontal disease, perhaps even with targeted antibiotic therapy against P. gingivalis, can slow down or prevent the development of aortic stenosis in at-risk patients,” he told MNT. 5 tips for preventing periodontitis For readers looking to improve their oral health to prevent periodontitis, Ana Becil Giglio, DDS, president of the American Academy of Periodontology (AAP), who was not involved in this study, said the AAP recommends five methods for preventing periodontal disease: Brush your teeth, gums, and tongue after meals, or at least twice daily, to remove food debris, plaque, and bacteria. Clean between your teeth daily using floss or another interdental cleaning aid. Swish with an antibacterial mouthwash. Know your risk factors: age, smoking, diabetes, diet, and genetics can all increase your risk for periodontal disease. Get an annual comprehensive periodontal evaluation from a periodontist to detect gum disease early. “While these findings are preliminary and do not prove cause and effect in humans, they reinforce an important message: periodontal disease is a chronic inflammatory disease that affects more than the mouth,” Giglio said. “As periodontists, we are uniquely trained to diagnose and treat this inflammation, helping patients preserve both their oral health and potentially their overall health,” she added. 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Yes No READ NEXT All about Vyndamax and Vyndaqel for cardiomypathy Medically reviewed by: Dana Kim, PharmD Vyndamax (tafamidis) and Vyndaqel (tafamidis meglumine) are prescription capsules used for cardiomyopathy. Learn about side effects, uses, dosage, and more. Attruby interactions: Alcohol, medications, and other factors Learn about possible Attruby interactions with alcohol, other drugs, supplements, foods, and more. Camzyos and cost Camzyos is a prescription drug used to treat hypertrophic cardiomyopathy. Learn how to lower long-term costs, and more. Camzyos dosage Camzyos is a prescription drug used to treat obstructive hypertrophic cardiomyopathy. Learn about the drug’s dosage, form, strengths, and more. Attruby side effects and how to manage them Attruby, which is used to treat transthyretin amyloid cardiomyopathy, can cause side effects. Learn about its more common, mild, and serious side effects and how to manage them. 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