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The Oral Microbiome and Brain Health: A Holistic Approach to Cognitive Wellness

Writer's picture: lucluc

When we think about brain health, oral hygiene might not be the first thing that comes to mind. However, groundbreaking research reveals that the oral microbiome—the ecosystem of bacteria in your mouth—plays a significant role in cognitive function and may even influence the risk of cognitive decline as we age.

By understanding this connection, we can take a more holistic approach to mental, emotional, and physical health, ensuring that every aspect of our wellbeing is supported.


Split image of a blue brain and pink brain with teeth, surrounded by fruits and plants. Text: "The Surprising Connection Between Oral Health and Brain Function".
Exploring the intricate link between oral microbiome and cognitive wellness: A colorful depiction of how oral health impacts brain function.

The Oral Microbiome’s Role in Cognitive Function

Recent findings published in PNAS Nexus highlight how the balance of bacteria in your mouth can either support or hinder brain health:

  • Beneficial Bacteria: Neisseria is linked to improved memory, attention, and executive function.

  • Harmful Bacteria: Porphyromonas and Prevotella intermedia are associated with mild cognitive impairment and genetic risk factors for Alzheimer’s disease, such as the APOE4 allele.

Researchers suggest two key ways the oral microbiome impacts the brain:

  1. Pathogenic bacteria may enter the bloodstream and travel to the brain, causing inflammation and damage.

  2. Harmful bacteria can displace nitrate-reducing bacteria, which are essential for producing nitric oxide—a molecule critical for brain function, including memory and learning.

How Diet and Lifestyle Impact the Oral Microbiome

Your diet and daily habits play a crucial role in shaping the oral microbiome. Nitrate-rich foods, such as those found in the Mediterranean diet or the DASH diet, promote the growth of beneficial bacteria like Neisseria. These diets are rich in leafy greens, beets, and other vegetables that support nitric oxide production, which is vital for brain health.

But here’s the irony: in today’s world, eating whole, natural foods is often labeled as a “diet.”

Whole Foods: Why Is Eating Naturally Now Called a “Diet”?

As I mentioned in my previous post, "The Psychological Impact of Calorie Counting and Finding Food Freedom," one of the most ironic aspects of modern nutrition culture is that eating whole, natural foods—fruits, vegetables, lean proteins, nuts, seeds, and unprocessed grains—is now labeled as a “diet.”

In this upside-down world of nutrition, eating the most natural and nourishing foods we can find is often seen as restrictive or part of a “clean eating” trend, rather than simply being a normal, healthy way to eat.

This mindset has a profound impact on how we view food:

  • Labeling whole foods as a “diet” reinforces the idea that eating naturally is something unusual or difficult.

  • It creates a culture where processed, convenience foods are the norm, and eating whole foods requires justification or explanation.

But here’s the truth: eating whole, natural foods isn’t a diet—it’s how humans are meant to eat. By normalizing whole foods and rejecting the idea that they’re part of a restrictive “diet,” we can shift our mindset and build a healthier relationship with food.

This shift is especially important when we consider the connection between diet, the oral microbiome, and brain health. By embracing whole, nutrient-dense foods, we’re not just supporting our oral and brain health—we’re honoring the natural connection between our bodies and the earth.

Holistic Tips to Support Your Oral and Brain Health

To maintain a healthy oral microbiome and support cognitive function, consider these holistic strategies:

  1. Adopt a Nitrate-Rich Diet: Incorporate leafy greens, beets, and other nitrate-rich vegetables into your meals.

  2. Practice Excellent Oral Hygiene: Brush and floss daily, and schedule regular dental check-ups.

  3. Stay Hydrated: Drinking water helps wash away harmful bacteria and supports oral health.

  4. Reduce Sugar Intake: Minimize sugary foods and drinks that feed harmful bacteria.

  5. Manage Stress: Chronic stress can negatively impact your microbiome and overall health.

  6. Consider Prebiotics and Probiotics: These can help balance the microbiome in both your gut and mouth.

Why Holistic Health Matters

This research underscores the importance of taking care of yourself on all levels—mental, emotional, physical, and even metaphysical. By addressing the connection between oral health and brain health, you can take proactive steps to protect your cognitive function and overall wellbeing.

Take the Next Step in Your Healing Journey

Are you ready to optimize your oral and brain health for a sharper mind and a healthier future? Schedule a complimentary "Healing & Growth Discovery Call" today. Together, we’ll create a personalized plan to support your mental, emotional, and physical wellbeing.


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