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Dr. Kara Fitzgerald

Individualized Evidence Based Integrative & Functional Medicine

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YOUNGER YOU
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General Office Policies and Fees

Please reach out to frontdesk@drkarafitzgerald.com for information on our clinic.

KARA FITZGERALD, ND

DR. KARA FITZGERALD, LLC
KF EDUCATION & CONSULTING, LLC

The New Frontiers Functional Medicine & Nutrition Clinic is located in the Sandy Hook Village section of Newtown, Connecticut in Fairfield County, Connecticut.

Phone:
(203) 304-9502
Fax:
(203) 304-9503
Address:
27 Glen Road, Sandy Hook CT 06482

Find us on:

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IFM Certified Practitioner

Kara Fitzgerald, ND, Naturopathic Doctor is a certfied practitioner with The Institute for Functional Medicine.

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drkarafitzgerald

In this conversation, @Montel_Williams shares the

In this conversation, @Montel_Williams shares the moment he realized something was actually shifting in his energy levels after starting mitochondrial support with @MitoQ.

We also discuss the connection between inflammation, mitochondrial function, and neurodegenerative conditions like MS and why supporting cellular energy may matter more than we once realized.

This is a powerful conversation about resilience, healing, and the evolving science of mitochondrial medicine.

Comment MONTEL and we’ll DM you the link to the episode, or visit https://www.drkarafitzgerald.com/2026/05/15/montel-williams-mitoq-ms-resilience/.

#MultipleSclerosis #MSAwareness #Mitochondria #MitoQ #Inflammation #HealthyAging #LongevityMedicine #FunctionalMedicine

Most people think there is one “best” diet for lon

Most people think there is one “best” diet for longevity. But the science shows something very different. Following generic trends or influencer driven protocols can actually move you further away from optimal health if they are not aligned with your biology.

In this episode of @extend_podcast, I sit down with @darshanshahmd to explore why personalized nutrition matters more than any trending diet. I explain how fasting protocols, restrictive diets, and one size fits all approaches can backfire, and why longevity nutrition must be tailored to the individual.

We also cover:
➡️ Why influencer driven diets often fail
➡️ The risks of stacking restrictive protocols like fasting and carnivore
➡️ Why bio-individuality is key in longevity nutrition
➡️ How nutrient diversity supports epigenetic health
➡️ Why the right diet depends on your biology, not trends

🎧 Listen to Episode 160: Dr. Kara Fitzgerald on Biological Age, Epigenetic Clocks, and the Future of Aging Reversal on Apple Podcasts or Spotify.

When we’re young, our bodies are incredibly effici

When we’re young, our bodies are incredibly efficient at building muscle.

We can take in almost any amino acids (yes, even from less-than-ideal sources) and put them to work.

Muscle growth is responsive. Forgiving. Easy.

But over time, that changes.

We develop what’s called muscle anabolic resistance, a reduced sensitivity to the muscle-building effects of protein.

Same protein intake. Different response.

Which means:
→ We need more intentional protein intake
→ We need the right nutrients to support muscle synthesis
→ And we need to prioritize muscle as a key part of healthy aging

This is one of the most overlooked shifts in midlife physiology.

Also, a small exhale for the parents out there: kids are naturally in a highly anabolic state.
They don’t need perfection. They’re doing more with less.

We, on the other hand?

We need to be a little more strategic.

COMMENT ANABOLIC or head to https://www.drkarafitzgerald.com/2026/04/21/overcome-muscle-anabolic-resistance-nutrients-aging/ for the full blog.

#HealthyAging #MuscleHealth #Longevity #ProteinIntake #WomensHealth #FunctionalMedicine #MidlifeHealth #StrengthTraining #AgingWell

We’re very good at naming diseases. Less good at a

We’re very good at naming diseases. Less good at asking what’s driving them.

There’s a mechanism showing up across the literature, linking iron dysregulation, lipid damage, and chronic disease progression.

And most clinicians still aren’t looking for it.

It’s called ferroptosis.

And it may be sitting underneath what we diagnose as:
• metabolic dysfunction
• fatty liver disease
• cardiovascular decline
• cognitive aging

This isn’t just another pathway.

It’s a pattern, one that may help explain why some patients don’t fully respond…and where we may be missing intervention opportunities.

Join Dr. Stephanie Venn-Watson and me from @fatty15 as we break it down:
✔ How ferroptosis shows up clinically
✔ What to look for (including key biomarkers)
✔ Where it fits into chronic disease progression
✔ Why this may represent a correctable deficiency state
✔ What emerging strategies could look like in practice

If you’re thinking, “this might explain a few of my patients…” you’re probably right.

👉 Save your spot. Comment ferroptosis and we’ll DM you the link or head to https://www.drkarafitzgerald.com/2026/05/04/ferroptosis-aging-biomarkers-treatment/ to register

It’s not A1C. Not LDL. It’s Lipopolysaccharide (LP

It’s not A1C.
Not LDL.
It’s Lipopolysaccharide (LPS).

An endotoxin that enters circulation when gut barrier function is compromised, quietly driving systemic inflammation.

And the data are hard to ignore:
→ In a 9-year cohort, LPS was the only biomarker that predicted both the presence and severity of anxiety and depression
→ Tracks with progression from prediabetes to diabetes
→ Drives hypothalamic inflammation → central insulin resistance
→ Associated with chronic low-grade inflammation and even skin conditions like acne

In women, this becomes especially relevant.
As estrogen declines in peri- and menopause:
↓ microbiome diversity
↑ intestinal permeability
↑ LPS translocation
Shifting the body toward a more inflammatory, catabolic state.

LPS isn’t just a marker. It’s a signal.

And if you’re not addressing it, you may be missing a root driver of metabolic and neurological decline.

COMMENT NITRIC or head to https://www.drkarafitzgerald.com/2026/05/05/perimenopause-gut-cardiovascular/) for my full conversation with @kiranbiome from @calroyhealthsciences.

#FunctionalMedicine #LongevityScience #GutHealth #Microbiome #Inflammation #Perimenopause #HealthyAging #PrecisionMedicine #MetabolicHealth #BrainHealth

This website is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician with any questions regarding a medical condition.

© 2026 Dr. Kara Fitzgerald, LLC | Site by Yakadanda

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Dr. Kara Fitzgerald, ND

Dr. Fitzgerald is an internationally-recognized expert clinician, as well as nationally-bestselling author, who is actively engaged in clinical research on epigenetics and longevity using a diet and lifestyle intervention developed in her research and practice.

She has published two clinical studies on the potential bioage-reversing effects of an 8-week DNA methylation-supportive diet and lifestyle in middle-aged men and women in the journal Aging. She continues to lead the conversation around interventions for healthy aging and their extensive potential in improving individual and population level disease burdens, while also providing evidence-based and practical advice that cuts through the hype.

Dr. Fitzgerald is on faculty at the Institute for Functional Medicine (IFM), is an IFM Certified Practitioner, and lectures globally on functional medicine, longevity, and epigenetics to practitioners and consumers.

She maintains an award-nominated podcast series ranked in the top 1% of global podcasts by Listen Score, New Frontiers in Functional Medicine, and an active blog and Clinic Immersion webinar series through her website, www.drkarafitzgerald.com.

Follow Dr. Fitzgerald on Instagram: @drkarafitzgerald

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