Skip to content
NEWSLETTER SIGNUP
SoundCloud page opens in new windowPinterest page opens in new windowYouTube page opens in new windowInstagram page opens in new windowTwitter page opens in new windowFacebook page opens in new window
Dr. Kara Fitzgerald
Individualized Evidence Based Integrative & Functional Medicine
Dr. Kara Fitzgerald Dr. Kara Fitzgerald
  • About
    • Dr. Kara Fitzgerald
    • Our Team
    • Press
    • Publications
    • Testimonials
    • Careers
  • Learn
    • Newsletter
    • Blog
    • Podcast
    • Webinars
    • Research, News & Ideas
    • Case Studies
    • Recommended Links
    • FxMED Sponsored Education
  • Recipes
  • Store
  • Contact
  • YOUNGER YOU
    • Practitioner Training
    • What is Younger You
    • Books
      • Younger You book
      • Better Broths and Healing Tonics Book
    • Discover Your Bio Age
      • Bio Age Quiz (BASA) – FREE
    • Programs
      • 10-Day Self-Paced Course
      • 1-1 Clinic Support
      • For Businesses
    • Supplements
  • Clinic
    • Our Clinic
    • New Frontiers Clinic Services
    • FAQ
    • Testimonials
    • Office Policies and Fees
    • Contact the Clinic
    • Getting Here
    • Patient Portal
Cart0

View CartCheckout

  • No products in the cart.

Subtotal: $0.00

View CartCheckout

Search:
  • About
    • Dr. Kara Fitzgerald
    • Our Team
    • Press
    • Publications
    • Testimonials
    • Careers
  • Learn
    • Newsletter
    • Blog
    • Podcast
    • Webinars
    • Research, News & Ideas
    • Case Studies
    • Recommended Links
    • FxMED Sponsored Education
  • Recipes
  • Store
  • Contact
  • YOUNGER YOU
    • Practitioner Training
    • What is Younger You
    • Books
      • Younger You book
      • Better Broths and Healing Tonics Book
    • Discover Your Bio Age
      • Bio Age Quiz (BASA) – FREE
    • Programs
      • 10-Day Self-Paced Course
      • 1-1 Clinic Support
      • For Businesses
    • Supplements
  • Clinic
    • Our Clinic
    • New Frontiers Clinic Services
    • FAQ
    • Testimonials
    • Office Policies and Fees
    • Contact the Clinic
    • Getting Here
    • Patient Portal

Dr. Kenneth Alan Litwin MD

You are here:
  1. Home
  2. Photo Album
  3. Dr. Kenneth Alan Litwin MD
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
The Sandy Hook Clinic (SHC) is located in the Sandy Hook Village section of Newtown, Connecticut.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.
The Sandy Hook Clinic (SHC) is located in the Sandy Hook Village section of Newtown, Connecticut.

Dr. Kenneth Litwin is an Internal Medicine Practitioner and is affiliated with Dr. Kara Fitzgerald. Dr. Kenneth Litwin received his medical degree from Allegheny University of the Health Sciences and has been in practice for 19 years. Dr. Litwin specializes in Internal Medicine.

Categories: Ken, PeopleApril 1, 2015

Album navigation

PreviousPrevious album:Rhonda Timmons, Office ManagerNextNext album:Dr. Kara Fitzgerald
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:

Facebook page opens in new windowTwitter page opens in new windowYouTube page opens in new windowLinkedin page opens in new windowPinterest page opens in new windowInstagram page opens in new windowSoundCloud page opens in new window
IFM Certified Practitioner

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

functionalmedicine
Follow Us on Instagram

drkarafitzgerald
Living longer is only part of the goal. The real o Living longer is only part of the goal. The real opportunity is extending healthspan, the years we remain strong, sharp, independent, and deeply engaged in our own lives. That future is shaped by what we do consistently today: moving our bodies, building muscle, protecting sleep, eating nutrient-dense foods, managing stress, and staying connected to the people who matter. None of these choices needs to be perfect to be powerful. Start where you are. Choose one small action and repeat it often. What do you want to keep saying “yes” to as you age? Comment NEWSLETTER to have weekly longevity insights sent to right to your inbox. #Longevity #Healthspan #HealthyAging #FunctionalMedicine #Wellness
What if one of the most powerful longevity tools i What if one of the most powerful longevity tools is already built into your day? A 2025 systematic review found that walking 7,000 steps a day was associated with a 47% lower risk of death and a 38% lower risk of dementia compared with walking 2,000 steps a day. And 7,000 isn’t a magic threshold. Health benefits begin well below it and build as daily movement increases. Take the stairs. Walk after a meal. Pace during a phone call. Park farther away. Small choices add up—and your future self may thank you for every step. Source: Ding D, et al. The Lancet Public Health, 2025. #Longevity #HealthyAging #Walking #MovementIsMedicine #FunctionalMedicine
What if your “biological age” is actually hiding t What if your “biological age” is actually hiding the most important part of the story? We tend to talk about biological age as though each of us has one number. But a fascinating new Nature Medicine study suggests our cells may be aging on very different timelines. Researchers analyzed more than 7,000 plasma proteins across 60,542 individuals and developed models estimating biological aging across more than 40 cell types—from astrocytes and neurons to macrophages, skeletal muscle cells and intestinal cells. The heterogeneity was striking. Some people showed accelerated aging in only one cell type, while a much smaller percentage showed widespread acceleration across 10 or more. Healthy lifestyle patterns were associated with younger cellular profiles overall, while smoking plus obesity was associated with broader cellular age acceleration. But one of the findings I found most fascinating involved APOE4 and astrocytes. APOE4 carriers showed older astrocyte profiles but younger macrophage profiles. And astrocyte aging substantially stratified future Alzheimer's risk—even within APOE genotype groups. That distinction matters. Your genetics are important. Your chronological age is important. But neither necessarily captures the biological state of the individual cells and systems that may influence disease vulnerability. There are important caveats: these aren't biopsies showing that someone's astrocytes are literally X years old. They're cell-type-specific aging signatures inferred from circulating proteins, and this observational work cannot establish that accelerated cellular aging causes disease. Still, I think this points toward an exciting evolution in longevity science: The question may be shifting from “How old are you biologically?” to “What, specifically, is aging in you?” And that could ultimately be a far more clinically useful question. Source: https://www.nature.com/articles/s41591-026-04446-y
If you work with complex chronic illness, you know If you work with complex chronic illness, you know how rarely there is just one thing driving the picture. That was one of the biggest takeaways from my recent conversation with @drrichardhorowitz on New Frontiers. Richard has spent more than 40 years working with some of the most challenging chronic illness cases, particularly Lyme and tick-borne disease. What I appreciate about his work is that he kept asking why some patients recovered while others remained sick. That ultimately led to his MSIDS framework, which looks across 16 overlapping factors that may contribute to chronic illness, including persistent infections, environmental toxins, immune dysfunction, gut health, mitochondrial dysfunction, hormones, sleep and more. His new book, Ending Chronic Illness, expands that systems-based thinking beyond Lyme and explores how these overlapping drivers may show up across complex chronic conditions. Our podcast conversation went into some fascinating territory, including persistent infection, neuroinflammation, Long COVID, ME/CFS, biofilms, environmental exposures and emerging questions around infection and neurodegeneration. Richard is truly a clinician’s clinician, and he has spent decades thinking deeply about the patients who don’t fit neatly into a diagnostic box. For clinicians working with complex, treatment-resistant patients, I think this book will give you plenty to think about and likely some new questions to ask. Congratulations, Richard! Comment LYME for a link to my full conversation Pre-order your copy at https://cangetbetter.com/ to start reclaiming your health! (Plus, upload your receipt to get instant access to Chapter 4 on toxicity and detoxification!)
We knew biological age changed. Our new EWAS asks We knew biological age changed. Our new EWAS asks what changed beneath the clock. The findings offer an exploratory look at how a polyphenol-dense diet and lifestyle pattern may influence the epigenome and pathways connected to aging. Comment EWAS STUDY and I’ll send you the full clinician’s guide.
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.
Dr. Kara Fitzgerald

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

  • Shipping & Returns
  • Privacy Policy
  • Terms & Conditions
  • Get Directions
  • Contact
Footer menu
Go to Top
We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies.
Cookie settingsACCEPT
Manage consent

Privacy Overview

This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
Necessary
Always Enabled
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Non-necessary
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
SAVE & ACCEPT
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

Follow Dr. Fitzgerald on YouTube