Oral Health and Multiple Sclerosis (MS): What’s the Connection?

A Biological & Holistic Dentist’s View for Patients in Virginia and the DC Metro Area

For many people living with multiple sclerosis (MS), the focus understandably stays on the brain, spine, medications, imaging, fatigue, and mobility. Very few are told that their mouth — the gums, teeth, and oral bacteria — may also be connected with their MS .

An emerging body of research on MS suggests that:

• Certain oral bacteria and chronic gum infections may promote or amplify the immune disturbances involved in MS.

• People with MS often show a distinct, more inflammatory oral microbiome compared with healthy individuals.

• Multiple sclerosis itself can worsen oral health, creating a vicious, bidirectional cycle between the mouth and nervous system.

At Virginia Biological Dentistry, where we serve patients across Virginia, the Washington DC metro area, Northern Virginia, and nearby Maryland communities such as Bethesda and North Bethesda, we practice holistic, biological, and natural dentistry that looks at the mouth as part of the entire body. We also work with patients with different autoimmune and neurological conditions while we help them restore their oral health .

This post will walk through what peer-reviewed research says about:

• How oral health might facilitate the onset and progression of MS,

• How MS can in turn make oral disease more likely, and

• What that means in practical terms for patients seeking a natural or holistic dentist in Virginia and the DC region.

Why Multiple Sclerosis and Oral Health Might Be Connected in the First Place

Multiple sclerosis is an autoimmune disease in which the immune system attacks the myelin sheath — the protective insulation surrounding nerve fibers in the brain and spinal cord. This leads to inflammation, demyelination (loss of myelin), and over time, damage to the nerve fibers themselves.

In that sense, MS is not just a “brain problem.” It is:

• A chronic inflammatory condition,

• Driven in part by dysregulated immune responses, and

• Influenced by environmental, microbial, and genetic factors.

The mouth sits at a unique crossroads of all three:

1. It is one of the densest microbial environments in the human body.

2. Its tissues (gums, periodontal ligament, bone) are rich in blood vessels and immune cells.

3. Inflammation here can send signals and microbial products into the bloodstream, affecting distant organs.

An article by Yvonne L. Kapila, “Oral Health’s Inextricable Connection to Systemic Health” shows how periodontal disease (chronic gum disease) is linked to cardiovascular disease, diabetes, rheumatoid arthritis, adverse pregnancy outcomes, and more — primarily through inflammatory and immune pathways that extend far beyond the mouth.

Although that study does not focus exclusively on MS, it provides the conceptual engine for understanding why chronic oral inflammation and dysbiosis (oral microbial imbalance) might influence conditions like multiple sclerosis.

The Oral Microbiome as an Immune “Control Panel”

The oral microbiome refers to the community of bacteria, fungi, and viruses that live in our mouths. In a balanced state, this community is relatively stable and cooperative. But when balance is lost — through poor hygiene, diet, medications, systemic disease, or other factors —  dysbiosis in the mouth develops.

Dysbiosis doesn’t just stay in the mouth. Oral bacteria and their by-products can:

• Enter the bloodstream through inflamed or ulcerated gums,

• Interact with immune cells in lymph nodes and distant tissues,

• Trigger systemic inflammation and immune activation.

Kapila’s review highlights how chronic periodontitis induces a state of sustained low-grade bacteremia and endotoxemia (bacterial components like lipopolysaccharides circulating in the blood), which can influence many organ systems, including the brain.

For MS, this is crucial: the disease involves immune cells that become misdirected against nervous system structures. If the oral microbiome is constantly feeding inflammatory messages into the body, it may help tip the immune system into a more aggressive or dysregulated state.

Evidence That MS Patients Have a Different — More Inflammatory — Oral Microbiome

A Distinct Oral Bacterial Profile in MS

Several recent studies have compared the oral microbiome of people with MS to healthy controls. An article by Zahra Zangeneh – “Bacterial Variation in the Oral Microbiota in Multiple Sclerosis Patients”, found that patients with MS had higher levels of Gram-negative and inflammatory bacteria, including Fusobacterium, Porphyromonas, and Prevotella, along with other shifts in the balance of oral species.

This suggests that MS might be associated with a specific pattern of oral dysbiosis — the oral ecosystem is not merely “unhealthy,” it is shifted toward bacteria known to be powerful immune stimulators. Another study by Sukirth M. Ganesan and colleagues, “Relapsing–Remitting Multiple Sclerosis Is Associated With a Dysbiotic Oral Microbiome”, examined patients with relapsing–remitting MS (RRMS). They reported that the MS group had:

• Enrichment of lipopolysaccharide (LPS) biosynthesis pathways,

• A higher relative abundance of specific Gram-negative bacteria, and

• Microbial patterns that correlated with immune and inflammatory markers.

Their important conclusion was “The oral microbiome shows potential as a biomarker for MS‐related immune alterations.” In other words, the mouth of an MS patient often contains more bacteria capable of sending strong “danger signals” to the immune system.

The Salivary Metabolome in MS

In a 2025 article “Multiple Sclerosis Patients Exhibit Oral Dysbiosis With Decreased Early Colonizers and Lower Hypotaurine Level”, Fitzjerrells and co-authors showed that people with MS tend to have:

• Fewer early colonizers like certain Streptococcus species, which usually help stabilize the oral biofilm, and

• Changes in salivary metabolites, including lower levels of hypotaurine, a compound related to taurine, which plays roles in oxidative stress and myelin stability.

These metabolic shifts hint that oral dysbiosis in MS is not just about “bad germs,” but also about altered biochemical signaling that could influence myelin health and neuroinflammation.

Periodontal Disease and the Risk or Progression of MS

Chronic Gum Disease Appears More Common in People With MS

When you look beyond the microbiome and into full-blown gum disease, the association between oral health and MS becomes even clearer. A 2023 systematic review and meta-analysis by Athanasios Tsimpiris and colleagues, “Association of Chronic Periodontitis With Multiple Sclerosis: A Systematic Review and Meta-Analysis”, concluded that:

• Chronic periodontitis is significantly more prevalent in people with MS than in those without MS.

• The association persists even after adjusting for confounding factors in several of the included studies.

The authors suggest that chronic gum inflammation might contribute to the onset or worsening of MS, while also noting that MS-related disability can make oral hygiene more difficult — positioning periodontitis as both a potential cause and consequence of MS.

Oral Manifestations in MS Patients

Clinical reports help us see what this looks like in everyday practice. In their study,  “Oral Health Status and Multiple Sclerosis: Classic and Non-Classic Manifestations—Case Report”, Costa and co-authors describe a 49-year-old woman with long-term relapsing–remitting MS who presented with:

• Mucosal irritation, dry mouth (xerostomia), and halitosis,

• Localized gingivitis,

• Significant tooth wear, and

• Multiple tooth losses due to caries.

They also review evidence that MS patients frequently show higher plaque indices, more gingival inflammation, and more missing or decayed teeth than matched controls, due to a combination of neurologic, functional, and medication-related factors. This reinforces the idea that periodontal disease and oral dysfunction are not incidental in MS — they are common, clinically relevant, and tied to the disease process.

Oral Pathogens That May Accelerate Neuroinflammation

Porphyromonas gingivalis — A “Keystone” Periodontal Pathogen

Porphyromonas gingivalis is one of the best-studied bacteria in chronic periodontitis. It produces enzymes known as gingipains, along with powerful endotoxins, and is capable of reshaping entire oral microbial communities.

In 2002, Lior Shapira and colleagues published a study  “Effects of Porphyromonas gingivalis on the Central Nervous System: Activation of Glial Cells and Exacerbation of Experimental Autoimmune Encephalomyelitis”. showing that peripheral exposure to P. gingivalis in mice worsened experimental autoimmune encephalomyelitis (EAE) — the primary animal model of MS — and activated glial cells (immune-related support cells) in the central nervous system.

The authors importantly concluded:
“The present study provides evidence that infection with a periodontal pathogen, such as P. gingivalis, may play a role in the pathogenesis of CNS inflammatory disorders such as MS.”

More than twenty years later, this line of inquiry has expanded. In 2025, Dong Dai and co-authors published  “Porphyromonas gingivalis Exacerbates Experimental Autoimmune Encephalomyelitis….”. They demonstrated that P. gingivalis infection:

• Activates the ZAP70/NF-κB pathway in immune cells,

• Promotes Th1-type immune responses, and

• Leads to more severe EAE, with greater neurological impairment in mice.

The researchers’ conclusion was that “P. gingivalis as a local periodontitis pathogen [is a] significant contributor to neuroinflammation” and that P. gingivalis provided “new insights into the pathogenesis of multiple sclerosis.”

In other words, their findings strongly suggest that chronic periodontal infection with P. gingivalis doesn’t just damage gums and bone — it can drive immune mechanisms very similar to those involved in MS, at least in experimental models.

Fusobacterium nucleatum — Linked to MS Disease Severity

Another important player in MS is Fusobacterium nucleatum, a Gram-negative bacterium often found in periodontal pockets.

A 2025 study by Hiroyuki Naito and colleagues “The Periodontal Pathogen Fusobacterium nucleatum Is Associated With Disease Severity in Multiple Sclerosis”, found that a higher relative abundance of F. nucleatum in the oral cavity was associated with greater MS disability, as measured by the Expanded Disability Status Scale (EDSS).

This does not prove causation, but it strengthens the case that certain oral pathogens may help drive or amplify disease severity in multiple sclerosis.

How Oral Health May Facilitate MS

Pulling all of these findings together, several mechanisms emerge to suggest how poor oral health might influence both the onset and progression of MS:

1. Systemic Inflammation and Immune Priming

Chronic periodontal disease leads to ongoing release of inflammatory mediators (such as IL-6, TNF-α, and IL-1β) and bacterial components like LPS into the bloodstream. Kapila’s work and related reviews underscore that this systemic inflammatory burden affects distant organs and can exacerbate existing inflammatory diseases.

For someone genetically susceptible to MS, or already diagnosed, this continuous immune “background noise” from the mouth may:

• Lower the threshold for autoimmune activation,

• Sustain disease activity, and

• Interfere with remission processes.

2. Blood–Brain Barrier Disruption

Chronic low-grade inflammation, such as that seen in untreated periodontal disease, is known to affect the integrity of the blood–brain barrier (BBB). When the BBB is disrupted:

• Immune cells can more easily enter the brain and spinal cord,

• Cytokines and bacterial products can reach neural tissue,

• Local inflammation in the CNS becomes easier to initiate and sustain.

While most MS research on the BBB focuses on systemic inflammation in general, the mouth is a major and often overlooked source of that inflammation. More research is still needed to determine how oral inflammation alone can affect BBB and beyond.

3. Changes in Metabolites That Influence Myelin and Oxidative Stress

As Fitzjerrells and colleagues showed, MS patients often have a salivary metabolome marked by lower levels of hypotaurine, among other changes.

Because taurine and related compounds are involved in myelin stability and protection against oxidative stress, shifts in these metabolites may add another layer of vulnerability in MS, particularly if they reflect or reinforce broader metabolic stress driven by oral dysbiosis.

Autoimmune Disorders such as MS Can Worsen Oral Health

While this article focused mainly on how oral health can influence MS, the relationship is not one-way. Multiple sclerosis can also make oral problems much more likely, creating a self-reinforcing loop.

Costa’s case report and literature review, “Oral Health Status and Multiple Sclerosis: Classic and Non-Classic Manifestations—Case Report”, summarizes several ways MS impacts the mouth:

• Motor and coordination issues can make brushing and flossing physically difficult.

• Fatigue can lead to skipped or rushed oral hygiene.

• Dry mouth (xerostomia) related to medications increases the risk of cavities and gum disease.

• Facial pain or sensory changes can make thorough cleaning uncomfortable or confusing.

• Some patients develop para-functional habits like clenching and grinding, contributing to tooth wear.

As a result, people with MS are more likely to develop plaque buildup, gingivitis, periodontitis, caries, and tooth loss — which in turn feed back into the inflammatory pathways already at work in MS.

This is the bidirectional model:

Oral dysbiosis and periodontal disease may help trigger or accelerate MS
and
MS-related disability and medications may worsen oral disease

Breaking or at minimum slowing this cycle requires attention from both neurology and dentistry, ideally with a shared understanding of the mouth–body connection.

What This Means for Patients in Virginia and the DC Metro Area

For patients in Richmond, Glen Allen, Northern Virginia, the wider DC metro area, and nearby Maryland communities such as Bethesda and North Bethesda, the ongoing research on the connection between oral health and MS has practical implications.

If you are living with MS or any other autoimmune issues — or have a strong family history or risk factors — your mouth is not a side note. It is:

• A major source of immune and inflammatory signaling, and

• A reservoir of bacteria that may influence disease severity

Why Work With a Holistic or Biological Dentist?

Many people search for terms like “holistic dentist Northern Virginia,” “natural dentist DC metro,” or “biological dentist near me” because they want care that:

• Recognizes the mouth as part of the whole body,

• Uses biocompatible, metal-free materials whenever appropriate,

• Aims to reduce oral inflammatory load (not just patch teeth), and

• Coordinates with other providers when autoimmune or neurological conditions are involved.

This means that if you have MS (or another autoimmune condition):

1. Your gum health and oral microbiome are treated as central pieces of your health picture, not afterthoughts.

2. We prioritize periodontal stability, using gentle but thorough approaches to remove biofilm and address chronic oral infection.

3. We consider your dexterity, fatigue, and medication profile when designing home-care strategies.

4. We use materials and techniques intended to be as compatible as possible with complex immune systems, including ceramic/metal-free options for teeth restoration and implants, while we restore your oral health and bite functions.

Practical Strategies to Protect Oral Health When You Have MS

Rather than listing a long set of bullet points, it may help to imagine what a realistic oral health plan looks like for patients with autoimmune issues.

A More Frequent, Gentle Periodontal Maintenance Schedule

Instead of seeing gum cleanings as a twice-a-year chore, we would recommend that MS patients in our Virginia and DC metro area treat periodontal maintenance as a core part of their systemic care. That might mean:

• Coming in every 3–4 months for professional biofilm disruption,

• Using laser-assisted or minimally invasive periodontal therapies where appropriate, and

• Monitoring specific sites that tend to flare, rather than waiting until damage is obvious.

This is not “cosmetic dentistry.” It is oral inflammation management.

Home-Care Routines Designed Around Energy and Mobility

A person with MS who battles fatigue and hand weakness is unlikely to perform elaborate flossing rituals twice a day. Instead, we work with patients to design routines like:

• Using a power toothbrush with an easy-to-hold handle and built-in timer,

• Relying on water flossers or interdental brushes instead of traditional floss where appropriate,

• Aligning brushing with the time of day when energy is highest, and

• Incorporating saliva-supportive products when medications cause dryness.

The goal is not perfection, but consistency that you can realistically sustain.

Reducing Inflammatory Burden From Infections and Problem Teeth

For some patients, especially those with long-standing MS, we may also discuss:

• Safely addressing chronic dental infections, such as failing root canal–treated teeth, under carefully controlled  protocols.

• Choosing metal-free, biocompatible restorative materials where possible to reduce potential immune triggers.

• Planning more involved procedures around MS flares and medication schedules, in consultation with neurologists and other physicians.

The idea is to reduce the number of “fires” the immune system has to fight at any given time. 

A Biological Dentist’s Takeaway for Patients With MS

The peer-reviewed literature today does not claim that “gum disease causes multiple sclerosis” in a simple, linear way. Autoimmune diseases like MS are far too complex for that.

What the evidence does show, however, is that:

• MS patients commonly have a more dysbiotic, more inflammatory oral microbiome.

• Chronic periodontitis is more frequent in people with MS, and may be involved in disease risk or activity.

• Specific oral pathogens like Porphyromonas gingivalis and Fusobacterium nucleatum can worsen MS-like disease in animals and are associated with greater disability in humans.

• MS itself tends to worsen oral health, which then increases systemic inflammatory burden and may further aggravate MS.

• Long-standing work on oral–systemic health shows that the mouth is a legitimate and powerful driver of systemic inflammation — one that we can actually manage.

For patients in Virginia and the DC metro region, this means:

• Maintaining excellent oral and periodontal health is not a cosmetic luxury; it is a strategic part of self-care particularly in case of autoimmune issues.

• Working with a biological, holistic, or natural dentist who understands the mouth–body connection can help ensure your treatment plan supports both oral and overall wellness.

• Addressing oral inflammation, infections, and dysbiosis in your mouth is one of the few modifiable levers you can pull day-to-day to potentially reduce inflammatory stress on your body.

If you are have questions about your oral health impacting your body, we are here to help you explore those questions in a thoughtful, evidence-informed, and compassionate way and direct you to a proper oral treatment that might also help with your overall health.