Free Daily Podcast Summary
The Signal with Jonathan Jarecki: Daily Summaries Delivered
by Jonathan Jarecki
Welcome to the The Signal. In the episodes, I discuss a host of topics related to health, wellness, science, decentralized medicine, and optimal living. I get the opportunity to speak with and learn from brilliant, forward thinking individuals dedicated to health and science.
Latest Episodes
The most recent episodes — sign up to get AI-powered summaries of each one.
- Oct 2, 20261h 31m
Environmental Signals That Shape Your Health | Cameron Borg, MS
Cameron Borg, MSc, is a science writer and host of the Ricci Flow Nutrition Podcast, with a Master's degree in Medical Science majoring in Nutrition from The Karolinska Institute in Stockholm, Sweden, where he completed his thesis with the Zubarev lab on biological isotope fractionation.He explains that tissues across species appear to regulate their carbon-13 and nitrogen-15 content toward a preferred set point. This challenges ecology's long-held "static delta" assumption. He also explains how C4 sugars from corn and cane leave a detectable carbon-13 signature in human red blood cells, and why synthetic supplements may differ isotopically from natural forms. We also discuss the limits of the calorie in complex systems, the Energy Resistance Principle, questions about ATP's "high-energy" bond, and how shade, near-infrared light, and blue twilight shape the light signals your body receives. You'll come away with a systems-level view of nutrition and light, plus practical ideas for aligning your environmental signals.FULL SHOW NOTES: https://docs.google.com/document/d/10Oonu70xuSpgM82TKQt4q5fnEr19N-HlBsu-0KeD1Kk/edit?usp=sharingSponsor: Daylight Computer https://buy.daylightcomputer.com/JONATHANJ , Code: JONATHANJ About this guest:Substack: https://ricciflow.substack.comInstagram: https://www.instagram.com/ricciflownutrition/ Podcast/YouTube: https://www.youtube.com/@RicciFlowNutrition Website: https://www.ricciflownutrition.comFind Jonathan Jarecki:Instagram: https://www.instagram.com/jonathanjarecki/Subscribe to the Newsletter: https://jonathanjarecki.substack.com/Website: jonathanjarecki.comTimestamps:00:00 Intro02:51 Cameron Borg04:07 The Journey of Understanding Science; Zubarev lab Experience09:14 Sponsor: Daylight Computer Co.10:32 The Subjectivity of Science15:18 Isotopes 101, Isotopic Ecology, Homeostasis, Tissue Specificity24:41 Deuterium and Its Interactions with Other Isotopes33:21 Isotopic Distribution Among Different Foods37:12 Supplements, Isotopic Composition, and the Complexity of Life41:13 Rethinking the Calorie: Emergent Parts, Complicated vs. Complex45:04 Applying the "Calorie" From a Complicated to a Complex System47:41 Weight Management and The Energy Resistance Principle50:42 Weight Loss: Eating Less Food Reduces Energy Resistance54:08 Understand Signal Coupling For Health59:41 Signal Hierarchy vs. Heterarchy01:00:28 The Role of Sunlight in Health01:00:53 Sunlight01:02:12 ATP May Not Have The "High-Energy Phosphate Bond"01:07:59 Human Light Harvesting For Biological Energy01:14:13 Light Spectrum Under Shade01:18:28 Blue Light: Rethinking Nighttime Light Exposure01:27:06 Closing Thoughts: Return to Nature01:30:33 Support, YouTube, Spotify & Apple Follow, Reviews & Feedback, Social Media, Substack Newsletter
- Aug 22, 20261h 21m
Why Sunlight Beats Vitamin D | Dr. Roger Seheult
In this episode, my guest is Dr. Roger Seheult, MD, is a physician quadruple board-certified in internal medicine, pulmonary disease, critical care medicine, and sleep medicine, an Associate Clinical Professor at the University of California, Riverside School of Medicine, an Assistant Clinical Professor at Loma Linda University, and the co-founder of MedCram. Today, he explains why vitamin D levels strongly predicted COVID-19 outcomes while vitamin D supplementation largely failed to reproduce the benefit, and makes the case that vitamin D is a marker for sunlight exposure rather than the primary mechanism behind it. He describes the near-infrared portion of sunlight which penetrates through the human body, and the hypothesis that it stimulates melatonin produced inside mitochondria, where it acts as a local antioxidant. We discuss randomized trials of infrared light in hospitalized and ICU patients, why greenery reflects infrared while concrete absorbs it, the Green Heart Louisville tree-planting trial, evidence that bright light at night predicts higher mortality, the NEWSTART framework, the Adventist Health Study, and published research on faith, forgiveness, and health. FULL SHOW NOTES: https://docs.google.com/document/d/1uJxnUa3ifCtHbE11v3iQwgTD1-nQD90-PttuS5NN640/edit?usp=sharing Sponsor: Solius https://shop.solius.com/JONATHANJ Code: JONATHANJ About this guest:Med Cram: https://www.medcram.com/YouTube: https://www.youtube.com/channel/UCG-iSMVtWbbwDDXgXXypARQ X: https://x.com/rogerseheult?lang=en Academic Profile: https://llu.edu/academics/faculty/seheult-roger/education Subscribe to the Newsletter: https://jonathanjarecki.substack.com/Timestamps 00:00 Intro02:29 Dr. Roger Seheult02:59 Dr. Seheult's Love for Science and Medicine10:41 Pillars of Health, "NEWSTART"13:11 Sunlight, COVID, Vitamin-D Paradox, Dr. Seheult's Clinical Experience17:08 Extra-pineal Melatonin, Antioxidant, COVID, ACE2 Receptor, Red Light18:50 Bringing Patients Outside in Sunlight20:05 Sponsor: Solius25:14 Melatonin, Infrared Light27:13 Heliotherapy, Sunlight in Modern Hospitals, Dr. Rollier, John Harvey Kellogg33:18 Mitochondria, Long-Wavelength Light, Metabolism, Light Penetration Depth36:03 Greenery, Infrared Light Bath, Longevity, New Data, MiEye42:29 Audience Questions42:41 Sunlight on Psychological Health43:47 Artificial Light at Night, Longevity, Mortality47:32 Cloud Coverage, Light Exposure49:40 New Paper Being Published with Dr. Seheult, Dr. Jeffery, Dr. Fosbury, & Zimmerman 50:37 Nutrition53:28 Adventist Health Study, Plant-Based Nutrition, Mechanisms of Action, High Protein01:01:15 Trust: The Science-Backed Health Benefits of Faith01:19:28 Support, YouTube, Spotify & Apple Follow, Reviews & Feedback, Social Media, Substack Newsletter
- Jul 31, 20261h 40m
Bright Days, Dark Nights: How Light Controls Your Health | Dr. Sean Cain
In this episode, my guest is Dr. Sean Cain, PhD, a Harvard Medical School-trained expert in the impact of light on the human circadian system, a Matthew Flinders Professor at Flinders University, and Co-Founder and CEO of Circadian Health Innovations. Today, he discusses how people differ more than fiftyfold in how sensitive their circadian systems are to evening light, that nearly half of modern homes are bright enough at night to suppress melatonin by fifty percent, and that most of us have no conscious awareness of any of it. We discuss the large observational studies he and his team have published linking bright days and dark nights to depression, type 2 diabetes, cardiovascular disease, and mortality, as well as his research on impaired light sensitivity in depression and why the amplitude of your circadian rhythm may matter more than its timing. We also discuss MiEye, the wearable light sensor his team developed, and practical changes to home and daytime lighting that anyone can make tonight.CLICK HERE FOR THE FULL SHOWNOTESThis includes all other resourcesSponsor: Brighter Lamphttps://getbrighter.com/?sjram=P2jrTbowzJOdCode: JONATHANJ Subscribe to the newsletter: https://jonathanjarecki.substack.com/?utm_campaign=profile_chipsTimestamps 00:00 Intro03:54 Dr. Sean Cain04:42 Dr. Cain's Love for Science and Research10:25 Understanding Circadian Rhythms: Anatomy and Function10:56 Setting the stage: Circadian Biology, Rhythms, SCN, ipRGCs16:20 Light, Circadian Entrainment, Mechanisms19:57 High Sensitivity and Interindividual Variability in the Response of the Circadian of the Human Circa22:02 Individual Sensitivity to Light and Circadian Disruption27:22 Home Lighting, Sunset, LEDs, Fluorescents, Incandescents27:37 Home Lighting and Its Effects on Circadian Health33:46 Tools: circadian friendly home lighting39:24 Population health outcomes; UK BioBank39:29 Psychiatric Disorders47:52 SPONSOR: Brighter Lamp49:34 The Link Between Light Exposure and Mental Health01:04:18 Light Exposure and Longevity: Key Findings01:09:45 The Importance of Daylight for Health01:17:41 Understanding Circadian Rhythms and Light Exposure01:17:52 The Impact of Light on Mood and Self-Perception01:23:39 Innovations in Circadian Health: My Eye Device01:34:15 Jet Lag Management and the Jet Lag App01:39:09 Support, YouTube, Spotify & Apple Follow, Reviews & Feedback, Social Media, Substack Newsletter
- Jul 27, 20262h 12m
I Never Went to the Doctor Growing Up | My Mom Explains Why
My guest is my mom, Rosebud, a mother of four who spent fifty years building a life around preventative medicine. In this episode she tells her whole story: growing up with no money in Ozone Park, Queens; losing her father at three, her brother at thirty-two, and her first husband at twenty-five; and how that grief turned into a set of convictions about how she wanted to raise her children. We talk about the plant-based, vegetable-heavy way we ate growing up, the natural births, the years she spent learning from John Galamaga, and the pushback she took for doing things differently. Newsletter: https://jonathanjarecki.substack.com/ Full Show Notes: https://docs.google.com/document/d/11ISCy3tLwVzrfEq-lR3jvp6qdYoZCOqB3GheuYJqC4s/edit?usp=sharing *Disclaimer: This episode is a personal and family history, offered for educational and general-interest purposes only. It is not medical advice and should not be used to diagnose or treat any condition. Neither the host nor the guest is a licensed medical professional. Nothing here is a recommendation for how you should care for yourself or your children — please consult a qualified physician about your own health decisions.Timestamps: 00:00 Intro03:08 Mom04:53 Mom's childhood, family situation, & diet09:28 Relationship with the doctor growing up, health habits10:43 Mom's mom (grandma)13:14 First daughter14:38 Vaccines, mom worked as a medical assistant15:41 How my mom thought about health growing up; diet, medications, vaccines, sunshine18:49 First husband passed away, life changed, breastfeeding21:32 Meeting my dad, second child, Grandma's first heart attack23:12 Finding John Galamaga; Dad having seizures, dad's health transformation29:54 Natural Childbirths32:59 Grandma's heart attack, heart health, health transformation36:03 Experience raising her children, no meltdowns, vaccine exemptions36:55 Dad being a chriopractor38:24 Dairy, juicing, diet, healthy snacks41:18 Surprise baby (Jonathan), limited doctor visits, high risk child, childbirth44:22 Pregnancy with Jonathan, lifestyle, diet, doctor visits48:48 Master Lowe, qigong, pregnancy52:59 Delivering Jonathan in the hospital57:42 Refusing childhood medical interventions; Vaccines, PKU, Vitamin K, hospital stay time01:01:31 Leaving the hospital, home environment01:03:46 Infrared sauna protocol, walking, magnet therapy, hydrogen water, epsom salt bath,01:05:34 Family dynamic while raising children01:06:26 The divorce01:09:37 No medications; Tylenol, Advil, cough syrup... oh my!01:10:22 Symptoms when I got sick01:12:03 Diet, Hippocrates01:16:53 Menopause, bone density, bioidentical hormones01:21:32 The sacrifice of raising children01:22:48 Tofu on hormones; testosterone, estrogen...01:29:16 Restrictive diets on menopause01:30:10 Food when we were sick; diet, resting, immune system01:31:38 Gerson Therapy, white potatoes, cancer, low protein01:36:46 Feeling energized throughout the day01:38:43 Specifics on the diet01:39:55 Importance of self education; Book recommendations01:49:42 Audience Questions:01:50:02 How did your kids go to school without vaccines?01:52:11 Essential oils01:54:38 Did we have any allergies growing up?01:56:30 Daycare; navigating different environments01:59:34 What to do when you catch the flu?02:00:15 Bentonite and Psyllium cleanse protocol02:02:29 My mom's personal health02:05:54 Jaundice remedy02:06:41 Replacements for Tylenol02:07:34 Did you get any pushback for raising your children vegan?
- Jun 29, 20261h 16m
How Red Light Powers Your Mitochondria & Why LEDs Harm Your Health | Dr. Glen Jeffery
In this episode, my guest is Dr. Glen Jeffery, PhD, a professor of neuroscience at University College London's Institute of Ophthalmology and a leading expert on how light interacts with mitochondria to shape health and aging. Today, he discusses how red and near-infrared light penetrate deep into the body and improve mitochondrial function and overall health. We also discuss how detrimental modern indoor life has become and why expensive red light panels are likely unnecessary and possibly harmful.By the end, you'll understand sunlight as a biological input your body evolved to depend on and the low-cost, practical steps you can take to get more of it.FULL SHOW NOTES HERE: https://l1nk.dev/bjuu235 Sponsor: Shadowmap https://app.shadowmap.org/?ref=jonathan&discount=JONATHANJ Code: JONATHANJ Sponsor: Ra Opticshttps://www.raoptics.com/JONATHANJ Code: JONATHANJ About this guest:Academic Profile: https://profiles.ucl.ac.uk/7465 Google Scholar: https://scholar.google.com/citations?user=UYlObKkAAAAJ&hl=en LinkedIn: https://www.linkedin.com/in/glen-jeffery-441a2b1b/ Timestamps:00:16 Intro02:46 Dr. Glen Jeffery03:14 Love for Science, Undergraduate04:24 Tiina Karu, Photobiomodulation Origins, Mechanisms 06:14 Mechanisms, Cytochrome C Oxydase, Nanowater, Electron Flow10:56 Cytochrome C Oxydase, Extra-Pineal Melatonin, Oxidative Stress12:45 Gerald Pollack, Exclusion Zone (EZ) Water13:45 Red/IR Light Passes Through the Human Body; Optics18:09 Red Light On Fruit Flies; Lifespan, ATP Production21:15 Human Epidemiology; Sunlight, Lifespan, All-Cause Mortality22:35 Sponsor: Shadowmap23:30 Features and Benefits of Shadow Map25:02 Incandescents, lifespan, and more25:02 Incandescent Light Produces the Oldest Flies; Broad Band IR on Lifespan25:48 Incandescent Light Bulbs, Vision 28:19 Evolutionarily Conserved Mitochondria29:03 Long-Wavelength Light & Blood Glucose; Mitochondria32:50 Unpublished CGM Data; Long-Wavelength Light & Blood Glucose36:57 Are Red Light Panels Harmful?; Light Intensities, Precautions, Mitigations43:56 Why Do We See Beneficial Effects From Long-Wavelength Therapy? 46:43 Short-Wavelength Blue Light, Mitochondria, Mechanism49:08 The Built Environment, Actionable Steps 52:24 Sponsor: Ra Optics54:24 Flicker55:24 Retinal Health, Blue Light, Red/IR Light59:09 Clinical Trial for Mitochondrial Disease; Ptosis, Red Light01:02:31 Biophotons, Mitochondrial Communication, Red/NIR on Biophotons 01:13:54 Support, YouTube, Spotify & Apple Follow, Reviews & Feedback, Social Media, Substack Newsletter
- Jun 8, 20261h 25m
Light as a Nutrient: Sunlight, Circadian Rhythm & Metabolic Health | Dr. Max Gulhane
Dr. Max Gulhane (MD) is a practising family medicine physician and health-optimising physician with a passion for root-cause analysis of human chronic disease and longevity. We discuss the full solar spectrum and how ultraviolet, visible, blue, red and near-infrared light each affect human physiology, including the POMC pathway, nitric oxide and blood pressure, and the evidence on sunlight, skin cancer and the vitamin D paradox. We discuss how artificial light at night suppresses melatonin and disrupts the circadian control of DNA repair, cardiovascular health, and metabolism. For those interested in light and circadian health, Dr. Gulhane offers a grounded, mechanism-focused framework for aligning daily light exposure with human biology.Full Show Notes here. Thank you to our sponsorDaylight Computer: daylightcomputer.com (code JONATHANJ for $25 off)Dr. Max GulhaneWebsite: https://www.drmaxgulhane.com/Instagram: https://www.instagram.com/maxgulhanemd/X: https://x.com/MaxGulhaneMDYouTube: https://www.youtube.com/@maxgulhanemd/Recommended lectures:Sunlight & Cancer: Beyond Skin Deep — https://youtu.be/SJGvr6dGOgQArtificial Light & Diabetes: No Food Required — https://youtu.be/vgrFpPusSKUWhat Your Cardiologist Doesn't Know About Sunlight & Heart Health — https://youtu.be/NaeqPHEM-d0Jonathan JareckiInstagram: https://www.instagram.com/jonathanjarecki/X: https://x.com/jonathanjareckiNewsletter: https://jonathanjarecki.substack.com/?utm_campaign=profile_chips00:00 Intro03:25 Dr. Max Gulhane04:02 Dr. Gulhane's Love for Science and Medicine09:01 What is Light?12:52 Sunlight Broken Down as a Nutrient14:02 Ultraviolet Light: Sunlight Is More Than Vitamin D15:56 POMC21:38 UVA/UVB on Cardiometabolic Health24:40 Big Picture of UV Light28:41 Sunlight, Skin Cancer, Dermatology Messaging, The Vitamin D Paradox35:10 Blue Light, Artificial Light at Night (ALAN), Mechanisms38:50 Sponsor: Daylight Computer40:34 ALAN, Epidemiology, Cancer, Heart Disease45:04 DNA Repair Mechanisms, Circadian Control47:27 Melanopsin (OPN4), Blue Light, UV Susceptibility53:25 Red, Infrared, Photobiomodulation, Metabolism01:00:08 Blue Light, Metabolism, and the Built Environment01:05:19 Photobiology of Atherosclerosis01:10:11 Blue Light on Cardiovascular Function01:12:25 Three M's of Circadian Health01:18:43 Sunlight, Testosterone, and Reproductive Behavior01:24:14 Support, YouTube, Spotify & Apple Follow, Reviews & Feedback, Social Media, Substack Newsletter#science #sunlight #circadianrhythm
- Apr 5, 20252h 0m
How Water Powers Cellular Energy & Human Health | Dr. Gerald Pollack
In this episode, my guest is Dr. Gerald Pollack, a renowned professor of bioengineering at the University of Washington and founding editor-in-chief of the journal Water. Dr. Pollack is widely recognized for his groundbreaking discoveries in cell biology and water science, particularly his identification of the “fourth phase” of water—also known as EZ (exclusion zone) water. His research offers a radical rethinking of how water functions in biological systems, challenging classical theories.&...
- Feb 25, 20251h 39m
LAMAS Qi Gong: Ancient Chinese Healing | Grandmaster Adrian Simon Lowe
In this episode, my guest is Grandmaster Adrian Simon Lowe (LoLo), the living lineage holder of LAMAS QiGong and direct descendent of Su Wu. Now in his 80s, Master Lowe has been practicing Qi Gong for over 70 years. This has earned him the distinction of being the leading authority in this field of Qigong. He is the author of The Stress Elimination Handbook, and has shared his wisdom on some of the world’s largest stages. Today, we discuss Master Lowe’s upbringing, including his family’s hist...
Get The Signal with Jonathan Jarecki summaries in your inbox
Free AI-powered daily recaps. Key takeaways, quotes, and mentions — in a 5-minute read.
Get Free Summaries →Free forever for up to 3 podcasts. No credit card required.
You Might Also Like
Listeners also like.
The Dr. Hyman Show
Explores root causes of chronic disease and promotes functional medicine, nutrition, and preventive health through expert discussions.
The Health Continuum
High-performing professionals learn science-based health strategies to sustain energy, focus, and resilience in demanding careers.
Made for Health | Peptides | Lyme | Chronic Infections | Long Covid | Insulin Resistance | Hypermobility
A physician explores science-based approaches to treating chronic conditions and restoring health.
Get Better Faster
Doctors and researchers discuss functional medicine and root-cause approaches to chronic illness and health optimization.
Treated with Dr. Sara Szal
Dr. Sara Szal explores holistic health solutions through conversations with experts and patients seeking mind, body, and soul healing.
Fully Alive: Unlocking the secrets to your healthier, happier, longer life
Explores science and lifestyle strategies to enhance health, purpose, and longevity.
ZOE Science & Nutrition
Experts break down cutting-edge health and nutrition science to help you make better choices for your body and gut.
Biohack-it
A weekly exploration of biohacking, holistic health, and science-driven strategies for optimizing physical and mental well-being.
The Dr. Gabrielle Lyon Show
Discusses health, longevity, and mental resilience through science-based conversations with medical and wellness experts.
hol+ with Dr. Taz MD | The Future of Medicine is Holistic
A physician explores holistic health through the interconnected physical, mental, emotional, energetic, and social dimensions of wellness.
hol+ with Dr. Taz MD | The Future of Medicine is Holistic
Explores holistic health by connecting physical, mental, and emotional factors like hormones, inflammation, and stress with expert discussions.
The Dan Buettner Podcast
Shares practical habits and insights from the world’s longest-lived populations to improve longevity and well-being.
About The Signal with Jonathan Jarecki
Welcome to the The Signal. In the episodes, I discuss a host of topics related to health, wellness, science, decentralized medicine, and optimal living. I get the opportunity to speak with and learn from brilliant, forward thinking individuals dedicated to health and science.
Customized Recaps
AI-powered recaps with compact key takeaways, quotes, and insights.
Straight to Your Inbox
Get key takeaways from The Signal with Jonathan Jarecki in a 5-minute read.
Save Hours Every Week
Stay current on your favorite podcasts without falling behind.
Frequently Asked Questions
What is Podzilla's The Signal with Jonathan Jarecki daily summary?
It's a free AI-powered email that summarizes new episodes of The Signal with Jonathan Jarecki as soon as they're published. You get the key takeaways, notable quotes, and links & mentions — all in a quick read.
How does the The Signal with Jonathan Jarecki podcast summary work?
When a new episode drops, our AI transcribes and analyzes it, then generates a personalized summary tailored to your interests and profession. It's delivered to your inbox every morning.
Is this an official The Signal with Jonathan Jarecki product?
No. Podzilla is an independent service that summarizes publicly available podcast content. We're not affiliated with or endorsed by Jonathan Jarecki.
Can I get summaries of other podcasts too?
Absolutely! The free plan covers up to 3 podcasts, any in the catalog. Basic raises that to 15, Pro to 40 and Max to 100. Browse our full catalog at /podcasts.
How often does The Signal with Jonathan Jarecki release new episodes?
The Signal with Jonathan Jarecki publishes monthly. Our AI generates a summary within hours of each new episode.
What topics does The Signal with Jonathan Jarecki cover?
The Signal with Jonathan Jarecki covers topics including Fitness, Health & Fitness, Alternative. Our AI identifies the specific themes in each episode and highlights what matters most to you.
Start getting The Signal with Jonathan Jarecki summaries tomorrow morning.
Free forever for up to 3 podcasts. No credit card required.
Free forever for up to 3 podcasts. No credit card required.