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Dr. Kara Fitzgerald
Individualized Evidence Based Integrative & Functional Medicine
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      • Younger You Book
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  • 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
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      • 10-Day Self-Paced Course
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Dr. Kenneth Alan Litwin MD

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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

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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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We’ve reduced omega-3s to soundbites. “Anti-infl We’ve reduced omega-3s to soundbites. “Anti-inflammatory.” “Heart healthy.” “Take fish oil.” But the data is far more nuanced. In this conversation with Dr. Bill Harris (co-creator of the Omega-3 Index), we unpack what actually holds up: • Low omega-3 status is consistently linked to a higher risk of all-cause mortality, cardiovascular disease, dementia, and even self-harm • The widely publicized AFib risk? Small, context-specific, and dose-dependent • Higher blood levels of omega-3s are associated with lower AFib risk • Omega-6s? Not the villain they’ve been made out to be The real issue isn’t omega-6 overload. It’s omega-3 insufficiency. And that shift in perspective matters clinically. Because when we oversimplify the biology, we make overly cautious (or incomplete) decisions. 👇 Has your thinking on omega-3s changed in the last few years? Comment OMEGA 3 INDEX and we’ll DM you the link to the full episode, or visit https://www.drkarafitzgerald.com/2026/04/21/omega-3-seed-oil-debate-harris/ #functionalmedicine #omega3 #omega3index #longevity #healthspan #clinicalinsights #precisionmedicine #cardiometabolichealth #inflammation #medicaleducation #healthpodcast #newpodcastepisode
Everyone is talking about protein right now. But Everyone is talking about protein right now. But what if we’re missing the bigger picture? In this episode of New Frontiers in Functional Medicine, I sit down with Dr. Tom Fabian from @dxsolutionslab to explore something most clinicians aren’t thinking about enough: 👉 the gut–muscle axis Because more protein doesn’t automatically mean more muscle. It depends on: • how well your patient can digest and absorb it • what their microbiome is doing with it • and whether protein is being used… or fermented We dive into: • why some patients don’t tolerate high-protein diets • how poor digestion can drive inflammation + food reactivity • the role of fiber + polyphenols in balancing protein metabolism • and how the microbiome influences muscle, immunity, and longevity This is a nuanced, clinically actionable conversation that challenges the “more protein = better” narrative. If you’re working with patients on muscle, aging, or metabolic health, this one matters. 🎧 Comment GUT MUSCLE AXIS or head to https://www.drkarafitzgerald.com/2026/04/07/high-protein-gut-health/ to listen to the full podcast.
Most people still think of creatine as a gym suppl Most people still think of creatine as a gym supplement. The neuroscience research says otherwise. In one clinical trial, adding creatine to SSRI therapy, under clinical supervision, doubled remission rates in women with major depression. The mechanism makes sense: creatine supports ATP production in neurons, and depression involves real deficits in brain energy metabolism, not just serotonin dysregulation. In functional medicine, we take this a step further. Creatine can be a clinically useful tool, and we also want to know why brain energy metabolism is depleted in the first place. Mitochondrial dysfunction, chronic inflammation, hormonal shifts, and nutrient deficiencies all play a role. Addressing those upstream drivers is still the goal. Creatine is one piece of a more complete picture. Brain energy, cognitive resilience, muscle preservation, mitochondrial support. Creatine belongs in a longevity strategy. We covered the full science: benefits, safety, dosing, and who it's actually for. 👉 Comment CREATINE GUIDE, and I'll send you the link. #Creatine #FunctionalMedicine #LongevityScience #BrainHealth #Mitochondria #WomensHealth #HealthyAging
What you ate yesterday may be shaping how you slee What you ate yesterday may be shaping how you sleep tonight. 🧠🌙 A new study tracked 3,500+ people across ~4,800 nights and looked at how daily diet changes impacted sleep within the same person. Here’s what stood out: ✨ Fiber changed sleep architecture Higher fiber → • ↑ Deep sleep • ↑ REM sleep • ↓ Light sleep • ↓ Nighttime heart rate ✨ Plant-forward eating = calmer nights More plant diversity + whole plant foods → • Lower overnight heart rate • Faster sleep onset ✨ Meal timing affects your physiology • Bigger evening meals → longer sleep but higher heart rate • Earlier dinners → shorter sleep but better cardiovascular recovery Diet, especially fiber + plant diversity, shifts your body toward a more restorative state. If your sleep feels “off”… It may not just be stress or screens. It could be your last 24 hours of food. Source: https://doi.org/10.64898/2026.02.17.26346471 Have you ever noticed better sleep after a cleaner, plant-forward day of eating? 👇 #SleepScience #GutBrainAxis #Microbiome #FunctionalMedicine #DrKaraFitzgerald #Longevity #SleepHealth #NutritionScience
Inflammation doesn’t just go away. It leaves a mem Inflammation doesn’t just go away. It leaves a memory. Even after tissues appear healed, cells can retain lasting epigenetic changes, keeping certain DNA regions more “open” and primed for future activation. In this study, when a cancer-promoting mutation was later introduced, those “primed” tissues developed larger, faster-growing tumors compared to tissues without prior inflammation. Why? Because inflammation had already made pro-growth genes more accessible. 👉 The takeaway: Chronic inflammation doesn’t just damage. It programs future risk. This is the epigenetic bridge between inflammation and cancer. And it’s why resolving inflammation isn’t just about symptom relief; it’s about long-term disease prevention. Source: https://doi.org/10.1038/s41586-026-10258-4
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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