SNPs, Genes & Chronic Illness: Why Your Genetic Test Doesn't Tell the Whole Story
Autoimmune AlchemyShow Notes
Dr. Nate Handley — an integrative oncologist and Director of the Cancer Recovery Program at Jefferson University's Marcus Institute for Integrative Health, who treats both cancer patients and complex chronic illness through precision medicine, blending genetics, bloodwork, and whole-person care.
From explaining why 75% of people carry an MTHFR variant that may not even be their real problem, to breaking down what a "normal" homocysteine or MCV level can quietly hide, this episode is packed with real clinical insight, precision-medicine tools, and practical testing knowledge you won't hear anywhere else. We go deep into the polyomics approach — genes, gut, environment, and everything in between — why your genetic blueprint is only part of the story, and how Nate decides who actually needs targeted supplementation versus who doesn't
Chapters and Time Stamps: 00:55 Meet Dr Nate Hanly 01:52 What Integrative Oncology Means 04:06 Beyond Cancer Care 04:57 Precision Medicine Polyomics 08:10 SNPs High vs Low Penetrance 11:06 MTHFR Variants Explained 13:03 Who Needs Methylfolate 15:32 SNP Panels and Polyomics 17:57 Supplements Food First Strategy 19:21 Clinic Testing Workflow 23:20 Inflammation Markers and Cytokines 24:04 Neutrophil Lymphocyte Ratio 25:52 High MCV Causes and Clues 29:16 Homocysteine and Methylation Cycle 32:05 Wrap Up and Where to Find Him
Key Takeaways 🧬 Having the Gene Doesn't Mean You'll Have the Problem 🏠 Your Genes Are a Blueprint — Not the Whole House 🔬 75% of People Have an MTHFR Variant — Most Never Notice It 🥦 Food First, Supplements Second — Always 🩸 A "Normal" Homocysteine Can Still Hide a Methylation Block 📊 A High MCV Isn't Always a B12 Problem 🌍 Your Environment Is Part of Your Biology Too 🧪 One Test Rarely Tells the Whole Story — Look at the Landscape
Guest Details & Links Guest: Dr. Nate Handley Specialty: Integrative Oncology | Precision Medicine | Internal Medicine Background: While practicing general oncology, Nate noticed a recurring gap — patients recovering from cancer treatment were often left without support for the fatigue, pain, and cognitive changes that followed. That gap led him to integrative oncology, and eventually to expand his practice to treat complex chronic illness beyond cancer, including autoimmune and rheumatologic conditions and long COVID. Education: Board-certified in internal medicine, medical oncology, and integrative medicine; Associate Professor, Department of Integrative Medicine and Nutritional Sciences, Thomas Jefferson University Certifications: N/A (board certifications listed above; no additional certifications stated in episode) Past Work: Practiced general oncology before shifting toward integrative and precision medicine; now splits his practice roughly evenly between cancer patients and patients with complex chronic disease Turning Point: Repeatedly seeing cancer survivors left to navigate recovery alone — without support for the physical and cognitive fallout of treatment — pushed Nate to build a program centered on whole-person healing, not just disease treatment Known For: Director of the Integrative Cancer Recovery Program at the Marcus Institute for Integrative Health; expert in polyomics-based precision medicine, SNP testing, and methylation pathways (MTHFR, COMT, homocysteine) Offers: Integrative oncology and precision medicine consultations at the Marcus Institute for Integrative Health, Thomas Jefferson University (Philadelphia)
Links: 🌐 Website: nathanleymd.com
About Your Hosts Micah Yu, MD, MHA, MS, ABOIM, DipABLM, IFMCP Dr. Micah Yu is a triple board-certified integrative rheumatologist who blends conventional medicine with holistic, nutrition-based healing to treat autoimmune and chronic inflammatory conditions. A patient himself, Dr. Yu brings a deeply personal perspective to his work, having reversed his own autoimmune arthritis through lifestyle and integrative medicine. He is certified in internal medicine, rheumatology, integrative medicine
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