Dr. Kara Fitzgerald
Individualized Evidence Based Integrative & Functional Medicine
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Latest posts
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Beyond the Longevity Hacks: What the Blue Zones Can Remind Us About the Exposome and Longevity
As longevity keeps gaining more and more attention, the quest to find the exact “things” that will allow us to “hack” our biological age clock continues to intensify, whether that’s foods, lifestyle practices, supplements or other interventions. And longevity science hasn’t been…
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What New Research Reveals About Reversing Cognitive Decline
What if cognitive decline isn't always a one-way street? For decades, the conventional approach to Alzheimer's disease and cognitive impairment has focused largely on slowing progression. But emerging research is challenging that assumption—and raising important questions about…
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Treating the Cause, Not the Symptom: The Mitochondrial Thread in Chronic Disease
Every clinician has patients who don’t fit the textbook. The hypertensive patient whose blood pressure won’t budge despite a full medication ladder. The patient with relentless fatigue that no bloodwork explains. On the surface, these look like unrelated puzzles – underneath,…
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What the Science Says About Sauna for Longevity: Infrared vs. Traditional
Sauna is everywhere in the longevity conversation, but are all saunas actually doing the same thing? In this episode, Dr. Kara Fitzgerald sits down with Sunlighten co-founder Connie Zack to unpack the science of infrared sauna vs. traditional Finnish sauna, how different…
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Toxic or Therapeutic? Rethinking Hydrogen Sulfide in Gut Health & Longevity
Hydrogen sulfide has long been viewed as a harmful gas, but have we been missing the most important part of the story? Clinically, H₂S is often associated with conditions like ulcerative colitis and hydrogen sulfide SIBO. However, modern research reveals a very different side to…
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What Actually Slows Aging? The Science vs. Hype | Dr. David Barzilai
In this episode of New Frontiers, Dr. Kara Fitzgerald sits down with longevity physician Dr. David Barzilai to separate promising science from hype and explore where the field of longevity medicine is headed. They discuss the evolution of biological age testing, including…
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The Epigenetic Impact of Younger You – A New EWAS Study
A clinician's guide to our new EWAS analysis of the Methylation Diet & Lifestyle Study, the dietary and lifestyle pattern behind Dr. Fitzgerald’s Younger You Program. It’s funny how things eventually come full circle. Way back in 2016, when we first presented our thoughts on the…
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What New Science Reveals About Mitochondria & How We Age | Dr. Siobhan Mitchell
In this episode of New Frontiers in Functional Medicine, Dr. Kara Fitzgerald sits down with neuroscientist and mitochondrial health researcher Dr. Siobhan Mitchell to explore emerging research on mitochondrial dysfunction, aging, and longevity. They discuss how mitochondria…
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Your Body Is Always Listening: How Heat and Light May Support Nervous System Recovery
Adaptation has two halves. Most conversations about heat therapy focus on the first half: hormetic stress. It’s the controlled challenge that prompts the body to build and grow more resilient. But a stressor is only useful if the body can complete the loop and recover from it.…
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The GLP-1 Problem No One Is Talking About: A New Metabolic Approach
GLP-1 receptor agonists have transformed the way we approach obesity and metabolic disease. The results can be remarkable. But as their use continues to expand, I think we need to be asking a bigger question: what does long-term metabolic health look like beyond weight loss? In…