Oral-Systemic Health

Your Saliva.
Your Health.

I'm Dr. Neusha Najafi — a dentist and oral-systemic health educator helping people understand how their mouth impacts fertility, pregnancy, heart health, and inflammation. The mouth is the gateway to the body.

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"Why has my medical doctor not discussed this with me?" That's the most common question patients ask. We're changing that.
— Dr. Neusha Najafi, DDS
Doctor Saliva — Oral health and wellness
Meet the Founder

Dr. Neusha Najafi

Dr. Neusha Najafi is a dentist, educator, and founder of DoctorSaliva, dedicated to uncovering connections between oral health and whole-body wellness. With a clinical focus on how oral bacteria influence fertility, pregnancy, heart health, brain health, and chronic inflammation, she's bridging the gap between dentistry and medicine through salivary diagnostics.

DDS — NYU College of Dentistry 15+ Years Clinical Practice Orange County, California OralDNA Specialist
"I was first introduced to salivary diagnostics at a very low point in my life — a late-term pregnancy loss. That experience changed the trajectory of my career and my mission."
Why Saliva Matters

Your mouth is the gateway to your body.

At Doctor Saliva, we believe your mouth holds critical clues to your overall well-being. Saliva isn't just spit — it's a diagnostic window into your body's health. Bacteria linked to gum disease can travel through the bloodstream and play a role in heart health, pregnancy outcomes, memory, and even cancer.

30%
of infertility cases remain "unexplained" by standard evaluation. Oral microbial dysbiosis may hold the missing answers.
33–68%
of pregnant women visit a dentist during pregnancy. Most prenatal providers never discuss oral health.
15+
years of clinical practice bridging dentistry and medicine through salivary diagnostics.
The Oral-Systemic Connection

Your oral microbiome is a window
into your whole body.

When most people think about oral health, they think about teeth and gums. But your mouth is more than just a smile — it's the entry point to your entire body.

🦠

Bacteria

11 bacteria that scientists keep a close eye on — and the health issues they're connected to beyond gum disease.

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👩

Women's Health

The unique connections between oral health and hormonal changes, including menopause, bone density, and autoimmune conditions.

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👶

Fertility & Pregnancy

Oral pathogens like Fusobacterium nucleatum have been found in placental tissues. Salivary screening before conception may identify modifiable inflammatory drivers.

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🧑

Teens

Adolescent oral health habits set the foundation for lifelong systemic health. Early screening can catch microbial imbalances before they compound.

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❤️

Heart Health

The bacterial pathways that connect gum infections to cardiac events. Oral bacteria are showing up in artery walls — and that changes prevention.

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🧠

Brain & Memory

Neuroinflammatory pathways linked to oral pathogens are being studied for their role in cognitive decline and Alzheimer's disease.

Learn more →
🔬

Cancer

Specific oral bacteria, including Fusobacterium nucleatum, have been found in colorectal tumor tissues, opening new frontiers in cancer prevention research.

Learn more →
The Science

The 11 bacteria that affect more
than just your mouth.

Did you know the bacteria in your mouth don't just stay there? Research shows that certain bacteria linked to gum disease can travel through the body and play a role in heart health, pregnancy outcomes, memory, and even cancer.

1

Aggregatibacter actinomycetemcomitans

(Aa)

Origin: Gum Disease

HeartPregnancy
2

Porphyromonas gingivalis

(Pg)

Origin: Gum Disease

HeartPregnancyBrainArthritis
3

Tannerella forsythia

(Tf)

Origin: Gum Disease

HeartPregnancyLungs
4

Treponema denticola

(Td)

Origin: Gum Disease

HeartPregnancyBrain
5

Fusobacterium nucleatum

(Fn)

Origin: Gum Disease

Colon CancerPregnancyHeart
6

Prevotella intermedia

(Pi)

Origin: Gum Disease

PregnancyLungs
7

Campylobacter rectus

(Cr)

Origin: Gum Disease

HeartPregnancy
8

Eubacterium nodatum

(En)

Origin: Gum Disease

Heart
9

Parvimonas micra

(Pm)

Origin: Gum Disease

HeartColon Cancer
10

Peptostreptococcus anaerobius

(Pa)

Origin: Gum Disease

Colon Cancer
11

Eikenella corrodens

(Ec)

Origin: Gum Disease

HeartEndocarditis
Intimate partners develop increasingly similar oral microbial profiles over time. This is about couples, families, and generations.
Get In Touch

We'd love to hear from you.

Whether you have questions about the connection between your mouth and your body, want to learn more about salivary diagnostics, or need guidance on getting started — we're here to help.

@drneushanajafi drneushanajafi.com Read the Blog