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Dr. Kara Fitzgerald
Individualized Evidence Based Integrative & Functional Medicine
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  • YOUNGER YOU
    • Practitioner Training
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      • Younger You book
      • Better Broths and Healing Tonics Book
    • Discover Your Bio Age
      • Bio Age Quiz (BASA) – FREE
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Rhonda Timmons, Office Manager

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Rhonda is energetic, organized and motivated individual who handles all aspects of communication that leads and inspires everyone in the office at Sandy Hook.
Rhonda is energetic, organized and motivated individual who handles all aspects of communication that leads and inspires everyone in the office at Sandy Hook.
Rhonda is energetic, organized and motivated individual who handles all aspects of communication that leads and inspires everyone in the office at Sandy Hook.
Rhonda is energetic, organized and motivated individual who handles all aspects of communication that leads and inspires everyone in the office at Sandy Hook.
Rhonda is energetic, organized and motivated individual who handles all aspects of communication that leads and inspires everyone in the office at Sandy Hook.
Rhonda is energetic, organized and motivated individual who handles all aspects of communication that leads and inspires everyone in the office at Sandy Hook.
Rhonda is energetic, organized and motivated individual who handles all aspects of communication that leads and inspires everyone in the office at Sandy Hook.
Rhonda is energetic, organized and motivated individual who handles all aspects of communication that leads and inspires everyone in the office at Sandy Hook.
Rhonda is energetic, organized and motivated individual who handles all aspects of communication that leads and inspires everyone in the office at Sandy Hook.
Rhonda is energetic, organized and motivated individual who handles all aspects of communication that leads and inspires everyone in the office at Sandy Hook.
Rhonda is energetic, organized and motivated individual who handles all aspects of communication that leads and inspires everyone in the office at Sandy Hook.
Rhonda is energetic, organized and motivated individual who handles all aspects of communication that leads and inspires everyone in the office at Sandy Hook.
Rhonda is energetic, organized and motivated individual who handles all aspects of communication that leads and inspires everyone in the office at Sandy Hook.
Rhonda is energetic, organized and motivated individual who handles all aspects of communication that leads and inspires everyone in the office at Sandy Hook.

Rhonda Timmons our Office Manager with experience in the customer service industry. Rhonda is energetic, organized and motivated individual who handles all aspects of communication that leads and inspires everyone in the office at Sandy Hook.

Categories: People, RhondaApril 1, 2015

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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

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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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It’s not just sugar. It’s what your gut does with It’s not just sugar. It’s what your gut does with it. New research is shedding light on a critical (and overlooked) driver of liver disease progression, from MASLD to MASH. Here’s what’s happening: Excess dietary sugar (especially fructose) doesn’t just stress the liver directly. It alters the gut microbiome→ shifting it toward microbes that produce acetaldehyde (a toxic compound also linked to alcohol metabolism) That acetaldehyde then travels to the liver, where it can: • Activate hepatic stellate cells • Increase MMP-7 expression • Drive fibrosis progression In a dataset of 210,000+ individuals, higher sugar intake was associated with increased liver-related mortality, in a clear dose-dependent pattern. But here’s where it gets interesting: Researchers were able to interrupt this pathway using a targeted probiotic strain designed to break down acetaldehyde, effectively halting fibrosis progression in preclinical models. This is a big shift. We’re not just looking at what we eat, we’re looking at how the microbiome metabolizes it. And that opens the door to entirely new therapeutic strategies. If you want to better understand the metabolic impact of fructose (and why it matters so much here), 🎧 Don’t miss my conversation with Robert Lustig. Comment FOOD PYRAMID and we’ll DM you the link. It will change how you think about sugar. #MASLD #MASH #LiverHealth #Fructose #GutMicrobiome #FunctionalMedicine #RootCauseMedicine #MetabolicHealth #ChronicDisease #DrKaraFitzgerald
What if we could nudge cells toward a more youthfu What if we could nudge cells toward a more youthful, repair-ready state, without full reprogramming? A new study on cardiomyocytes (heart cells) explores just that. Researchers looked at a subset of the Yamanaka factors, specifically OSK (OCT4, SOX2, KLF4), without c-Myc, and found something interesting: Instead of forcing cells to divide, OSK appears to prime them. → Cardiomyocytes entered a more flexible, dedifferentiated state → Structural components (sarcomeres) temporarily disassembled → This “priming” helped cells overcome key barriers to regeneration → Result: improved cardiac repair after myocardial infarction Not full cellular reprogramming, but a shift in readiness. This is where things get especially interesting for us. We’re actively exploring whether key nutrients may support similar biological terrain—not turning back the clock, but helping cells express some of the same regenerative characteristics. Early days. But an exciting direction. Because the future of longevity may not be about rewriting cells entirely… …but helping them remember how to repair. Source: Yan Y, Huang Y, Cao C ... OSK-mediated partial reprogramming induces cardiomyocyte dedifferentiation, overcomes cytokinesis barriers, and promotes post-MI endogenous cardiac regeneration Journal of Molecular and Cellular Cardiology, 2026; 215, 36-50 #LongevityScience #CardiometabolicHealth #CellularHealth #RegenerativeMedicine #FunctionalMedicine #Healthspan #YamanakaFactors #HeartHealth #Mitochondria #PrecisionMedicine
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
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.
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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.

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