Mind & Matter

Send us a text How ketosis and ketogenic diets work and how these tools can improve metabolic health, brain function, and even cancer management. Topics Discussed: Organs have different fuel preferences: brain strongly prefers glucose, heart prefers fatty acids, skeletal muscle is flexible and likes fat/ketones. Humans evolved with high metabolic flexibility; regular ketosis was normal for ancestors, but today most people never experience it. “Keto flu” is largely glucose withdrawal plus electrolyte/sodium loss; proper salt and hydration prevent most symptoms. Classic medical ketogenic diet is ~90% fat (historically saturated); modern versions often use more monounsaturated fats, MCTs, and higher protein. Saturated fat is not inherently atherogenic in the context of weight stability or caloric deficit; excess calories from any source can dysregulate metabolism. Exogenous ketones (e.g. BHB) provide energy, reduce ROS, stabilize membranes, increase inhibitory tone (GABA), and have hormone-like signaling effects independent of diet. Cancer cells often show Warburg effect (damaged mitochondrial respiration → heavy reliance on glycolysis); lowering glucose and raising ketones can stress cancer cells. True keto-adaptation for athletic performance requires 6–12 weeks; after that, elite athletes can match or exceed prior high-carb performance at sub-maximal and endurance efforts. Practical Takeaways: Therapeutic carbohydrate restriction (50–100 g/day for many people) plus occasional fasting or ketone supplements can restore metabolic flexibility with far fewer side effects than strict keto. Prioritize whole-food fats (eggs, fatty fish, beef, olive oil, butter/lard) and minimize processed keto products loaded with seed oils. Supplementing BHB (salts or esters) or MCT oil can ease the transition into ketosis, boost ketones without strict dieting, and may support brain and metabolic health. Regularly check basic blood markers (glucose, lipids, electrolytes) and consider an OmegaQuant test; optimizing metabolic health is one of the strongest preventable steps against cancer, neurodegeneration, and heart disease. Supplemental Ketone (BHB): KetoCitra —Ketone body BHB with potassium, calcium & magnesium, formulated with kidney health in mind. Use code MIND20 for 20% off. *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text How dietary polyunsaturated fats, especially omega-6 from seed oils, influence inflammation & heart health. Topics Discussed: Polyunsaturated fatty acids (PUFAs): Omega-6 from seed oils like safflower and corn can convert to pro-inflammatory molecules, while omega-3s produce resolving ones; imbalance biases toward chronic inflammation. Inflammation regulation: Acute inflammation aids healing but requires active “on” and “off” signals from lipid mediators; chronic inflammation arises from excess omega-6, delaying resolution. Heart health & diet: High omega-6 diets worsen post-heart attack outcomes in mice by elevating pro-inflammatory lipids. Evolution & historical context: PUFAs are essential but naturally balanced in pre-industrial diets; modern processing skews ratios, contributing to diseases, as shown in early rat experiments needing minimal fats for survival. Aging & lifestyle factors: Excess omega-6 exacerbates inflammation in older mice; sleep, exercise, and balanced fats are crucial for metabolic health and enzyme function in processing lipids. Cannabis & omega-6 interaction: In mice on high omega-6 diets, CBD-rich cannabis smoke reaches the heart quickly, suppresses immune response, and weakens cardiac strain, unlike in balanced-diet controls. Genetic models: FAT-1 mice converting omega-6 to omega-3 show better healing and neuroprotection; FAT-2 mice doing the opposite exhibit liver fibrosis and metabolic issues, highlighting omega-6 excess harms. Practical Takeaways: Balance omega-6 and omega-3 intake by reducing seed oils in processed foods and increasing sources like fish or algae to support inflammation resolution and heart health. Monitor and adjust fat intake with age, as older individuals are more sensitive to omega-6 excess leading to immune dysregulation. Avoid combining high omega-6 diets with smoking, as it may impair immune and cardiac responses based on animal data. About the guest: Ganesh Halade, PhD is a cardiovascular scientist and associate professor at the University of South Florida Morsani College of Medicine. *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text Methods & challenges of establishing causal relationships in health research, emphasizing epidemiology, randomized trials, and genetic approaches. Topics: Epidemiology: Studies disease influences using observational designs like case-control and prospective cohorts, plus trials, to identify patterns and test hypotheses. Hierarchy of evidence critique: Rejects rigid pyramids favoring RCTs, as all studies can be biased; advocates triangulation integrating varied data types for robust conclusions. RCT strengths & weaknesses: Randomization balances confounders, but issues like poor blinding, attrition, or subversion can undermine results; large samples may yield spurious precision if biased. Confounding & reverse causation: Examples include yellow fingers and lung cancer (both from smoking) or early atherosclerosis inflating CRP-disease links; hard to fully control statistically. Nutrition epidemiology: Observational studies often overstate benefits (e.g., vitamin E for heart disease), leading to failed trials; incentives favor new findings over revisiting errors. Mendelian randomization: Uses genetic variants as proxies for exposures (e.g., ALDH2 for alcohol metabolism) to mimic randomization; reveals no heart benefits from alcohol, unlike observational data. Negative controls: Tests implausible outcomes (e.g., smoking and murder) or exposures (e.g., paternal smoking in pregnancy) to check for confounding artifacts. Evidence triangulation: Combines diverse studies with different biases (e.g., cross-cultural comparisons) for causality; applied to dismiss HDL-raising drugs despite initial promise. Practical Takeaways: Scrutinize health claims by checking for negative controls or variety in evidence sources to avoid mistaking correlation for causation. For personal decisions like alcohol intake, consider genetic studies showing risks at all levels, and aim for moderation or abstinence based on overall evidence. When evaluating supplements or diets, prioritize trials over observational data, and question media hype that ignores confounding factors. About the guest: Dr. George Davey Smith, MD, DSc is a professor of clinical epidemiology at the University of Bristol and director of the MRC Integrative Epidemiology Unit. *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text Integration of brain metabolism with neural signaling, highlighting how core metabolites regulate energy use and protect neurons. Topics Discussed: Brain energy efficiency: Brains are much more energy-efficient than computers for similar processing, relying on adaptive metabolic strategies evolved under energy scarcity. Metabolism vs. information processing: Core metabolites like glutamate bridge basic cellular energy production and neural signaling. Lactate as a signal: Produced during exercise, lactate diffuses from muscles to brain, modulating neuronal excitability and providing neuroprotection. BHB in ketosis: During fasting or ketogenic diets, beta-hydroxybutyrate displaces glucose as fuel, enhances antioxidant defenses, and activates protective potassium channels in neurons. Adenosine and sleep: Accumulates from ATP breakdown during wakefulness, triggering sleep and locally inhibiting overactive neural networks for energy conservation. Glial cells’ role: Astrocytes and oligodendrocytes handle sophisticated metabolism, release signaling molecules like lactate, and modulate synapses, and influence diseases like Alzheimer’s. Practical Takeaways: Regular exercise elevates lactate, which signals the brain to adapt metabolism and may enhance neuroprotection against stress. Intermittent fasting or ketogenic diets can induce ketosis with BHB, potentially boosting brain antioxidant defenses and preconditioning against metabolic stress. Prioritizing sleep helps clear adenosine buildup, restoring energy balance and supporting long-term neural health. About the guest: Dr. Luis Felipe Barros, MD, PhD is a Chilean neurobiologist and professor at the Universidad de Valparaíso, where he leads a lab studying brain metabolism from glucose transport to mitochondrial function. Related Episode: M&M 255 | Unlocking Energy: How Nutrition & Drugs Impact Your Mitochondria | Chris Masterjohn *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text Mitochondrial fatty acid synthesis is a little-known but essential pathway that supports energy production and metabolic health. Summary: Dr. Sara Nowinski explains how mitochondria not only burn fuels to make ATP but also synthesize their own fatty acids inside the matrix; this conserved pathway produces lipoic acid (an essential enzyme cofactor) and longer-chain fats required for proper assembly of the electron transport chain, and disrupting it impairs respiration, glucose handling, and insulin sensitivity while enhancing it appears protective against obesity and heart injury. About the guest: Sara Nowinski, PhD is an assistant professor in the Department of Metabolism and Nutritional Programming at Van Andel Institute in Grand Rapids, Michigan, where since 2021 she has led a lab focused on mitochondrial biology and the mitochondrial fatty acid synthesis (mitoFAS) pathway. Topics Discussed: Basic mitochondrial energy production: food → pyruvate/fatty acids → acetyl-CoA → TCA cycle → electron transport chain → ATP Mitochondrial fatty acid synthesis (mitoFAS): a bacterial-like pathway that builds fats on an acyl carrier protein inside the matrix Lipoic acid: an 8-carbon fatty acid made only by mitoFAS, covalently attached to key enzymes (e.g., pyruvate dehydrogenase); cannot be rescued by supplements for cofactor use Longer mitoFAS products (14–16 carbons) stabilize electron transport chain assembly factors, explaining why pathway loss collapses respiration even when lipoic acid is intact Knocking out mitoFAS causes embryonic lethality, insulin resistance, poor glucose homeostasis, and a rare neurodegenerative disorder (MEPAN syndrome) Overexpressing the mitochondrial acyl carrier protein protects mice from diet-induced obesity, insulin resistance, and cardiac injury Muscle cell differentiation fails without mitoFAS, hinting at a role in tissue development and repair Practical Takeaways: Supplemental lipoic acid can act as an antioxidant but cannot replace the lipoic acid your mitochondria must make themselves for enzyme function. Severe impairment of mitochondrial fatty acid synthesis is linked to insulin resistance and metabolic disruption, suggesting mitochondrial health (beyond just biogenesis) matters for glucose control. *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text How internal states like hunger and hormones shape instinctive behaviors, particularly parental care Episode Summary: Dr. Johannes Kohl explains instinctive behaviors in mammals, emphasizing how states like hunger and hormonal cycles modulate actions such as parental care; they discuss hypothalamic circuits, hormone integration, and pregnancy-induced brain changes, highlighting the balance between motivations like feeding and nurturing offspring. About the guest: Jonny Kohl, PhD heads the State-Dependent Neural Processing Lab at the Francis Crick Institute in London. Discussion Points: Instinctive behaviors: Pre-wired actions like escaping predators or parental care enable survival without learning, yet remain modifiable by experience and internal states. Internal states: Defined as slowly changing conditions (minutes to weeks) like hunger or hormonal fluctuations that influence brain processing & behavior prioritization. Hunger regulation: Hypothalamic AGRP neurons detect caloric deficits, creating motivational discomfort relieved by food anticipation, operating on multiple timescales via neurotransmitters & peptides. Parental care: Virgin mice show variable pup-directed behaviors; hunger increases aggression, modulated by estrous cycle hormone ratios (estradiol/progesterone). Hormone-brain interactions: Steroid hormones like estradiol and progesterone diffuse into the brain, altering gene expression, neuronal excitability, and circuit plasticity over short and long timescales. Pregnancy adaptations: Late pregnancy rewires MPOA circuits via surging hormones, preparing robust maternal behavior before birth (anticipatory brain plasticity). Practical Takeaways: Recognize hunger’s impact: Mild food deprivation can heighten irritability or aggression, which can affect social interactions. Consider hormonal influences: Cyclical hormone changes affect mood and motivation; tracking cycles may help predict and manage behavioral shifts. Prioritize self-care in parenting: Sleep and nutrition deficits mimic hunger states, potentially reducing patience; ensure rest and meals to support nurturing behaviors. Question chronic hormone use: Long-term interventions like birth control or testosterone can alter brain function; weigh benefits against potential side effects. *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text How mitochondria travel between cells and how this hidden communication shapes metabolism, immunity, and even potential therapies. Episode Summary: Dr. Jon Brestoff talks about mitochondrial dynamics inside cells, their transfer between unrelated cells (distinct from inheritance during division), and its roles in adipose tissue communication, macrophage cleanup, and systemic metabolic signaling; they explore how high-fat diets disrupt this process, potential hormetic benefits, therapeutic mitochondria transplantation for diseases like Leigh syndrome and obesity, and broader immunometabolism crosstalk. About the guest: Jon Brestoff, MD, PhD is an associate professor of pathology and immunology at Washington University School of Medicine in St. Louis, where he directs the Initiative for Immunometabolism. Discussion Points: Mitochondria per cell range from ~100-5000; they move via fusion/fission, vertical inheritance (cell division), or horizontal transfer without division. Transfer mechanisms: free release, extracellular vesicles, or tunneling nanotubes using cytoskeleton transport. In healthy fat tissue, adipocytes routinely donate mitochondria to macrophages for degradation (quality control); high-fat (lard-based, long-chain FA) diets block macrophage uptake, diverting mitochondria to other organs. Diverted mitochondria may induce “mito-hormesis” (mild oxidative stress boosting antioxidants) or signal adipocyte metabolic status inter-organ. Mitochondria transplantation shows promise in animal models for ischemia-reperfusion, obesity, and mitochondrial diseases. Immune cells prefer glycolysis but have low mitochondrial biomass; transplanted mitochondria tilt T-cells toward anti-inflammatory regulatory phenotype. Circulating cell-free mitochondria rival immune cell numbers. Obesity inflammation stems from dying oversized adipocytes releasing lipids/mitochondria, forming crown-like structures with pro-inflammatory macrophages. Leigh syndrome from genetic mutations disrupting the electron transport chain. Transfer may be an evolutionary relic of endosymbiosis; cells may selectively use exogenous mitochondria like a “generator” during metabolic crisis. Reference Paper: Study : The power and potential of mitochondria transfer Related Episode: M&M 260 : Energy R Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text A biophysical rethink of life, health, and disease through the lens of the Energy Resistance Principle (ERP). Episode Summary: A reframe of biology as energy flow through resistance rather than mere molecular machinery, introducing the Energy Resistance Principle (ERP): life requires a Goldilocks balance of electron flow from food to oxygen via mitochondria; too much or too little resistance drives aging, disease, and death. Explain mitochondria as energy transformers, link ERP to insulin resistance, psychiatric disorders, and healing, and explore health as a dynamic field-like state optimized by flux modulation. About the guest: Nirosha Murugan, PhD is a biophysicist studying how physical signals pattern biology to decode and reprogram health; Martin Picard, PhD is a mitochondrial psychobiologist at Columbia University, exploring how mitochondrial energy dynamics connect to human experiences, health, and healing. They collaborate on biophotons, light emission, and multi-scale energy signaling. Discussion Points: Mitochondria transform electrons from food into versatile electricity via proton gradients. Energy Resistance Principle: transformation needs resistance; chronic high resistance causes dissipative heat, damage, aging. GDF15 cytokine signals mitochondrial stress to brain, triggering energy conservation/mobilization. Insulin resistance: adaptive defense against electron overload, reversible by fasting/exercise. Psychiatric illness: excess brain energy resistance; exercise, keto, psychedelics redistribute flux. Health: dynamic optimization of energy resistance, not absence of disease. Healing: daily recovery from micro-damage via balanced resistance. Future: energy-based diagnostics/therapies (light, TMS) over molecule-only drugs. *Not medical advice. Reference Paper: The energy resistance principle Related Episode: M&M 70 : Mitochondria, Aging, Cellular Energy, Metabolism, Gray Hair Reversal & Brain-Body Communication | Martin Picard Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text How artificial light impacts female menstrual cycles and their relationship to lunar cycles of the moon. Summary: Dr. Förster talks about how biological clocks, including circadian, tidal, lunar, and annual cycles, regulate behaviors in various species, with a focus on lunar cycle effects on human menstrual cycles. They explore historical and modern data suggesting that menstrual cycles may synchronize with lunar phases, a phenomenon potentially disrupted by modern artificial lighting, particularly blue light from LEDs post-2010. The conversation also covers circadian rhythm mechanisms in fruit flies and humans, highlighting the role of light and neuropeptides in maintaining biological synchrony. About guest: Charlotte Förster, PhD is a senior professor at the University of Würzburg specializing in chronobiology, particularly circadian rhythms in fruit flies, and has recently explored lunar cycle influences on human menstrual cycles. Discussion Points: Biological Clocks: Various clocks (circadian, tidal, lunar, annual) regulate behaviors; circadian clocks manage 24-hour cycles, while lunar clocks influence reproduction in marine species like corals and Christmas Island crabs. Lunar Cycle & Menstruation: Historical data (pre-2010) showed many women’s menstrual cycles synchronized with lunar phases (full or new moon), but this decreased post-2010, possibly due to blue light from LEDs disrupting biological rhythms. Blue Light Impact: Blue light from modern devices mimics daylight, potentially desynchronizing circadian and lunar clocks, with melanopsin in the eyes playing a key role in light sensitivity. Winter Synchronization: Menstrual cycle synchrony with lunar phases is stronger in winter, particularly January, possibly due to brighter moonlight or gravitational effects when Earth is closest to the Sun. Circadian Mechanisms: In fruit flies, 240 neurons manage circadian rhythms via clock genes with a 24-hour feedback loop, conserved in humans, where neuropeptides regulate slower, sustained rhythms. Health Implications: Disrupted circadian rhythms can desynchronize body clocks, impacting digestion, immunity, and increasing risks of cardiovascular issues, obesity, and cancer. Lifestyle Tips: To maintain synchrony, maximize daytime light exposure, minimize nighttime blue light, time meals appropriately, and exercise during the day, not late at night. *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text The genetic & developmental changes behind bipedalism & human anatomy. Wide release date: October 15, 2025. Episode Summary: Dr. Terence Capellini talks about the evolution of bipedalism in humans, exploring when and why it emerged, the anatomical changes required, and the genetic mechanisms behind these adaptations. They discuss how environmental shifts, like shrinking forests, drove the need for upright walking, the gradual skeletal changes in the pelvis and limbs, and how these changes may have facilitated larger brain sizes. Capellini highlights the complexity of evolutionary processes, emphasizing the role of multiple genetic changes in regulatory regions rather than single genes. About the guest: Terence Capellini, PhD is a professor and chair of the Department of Human Evolutionary Biology at Harvard University. His research focuses on developmental genetics and human evolution. Discussion Points: Bipedalism likely became common ~3.5 million years ago with Australopithecus afarensis, with earlier hominins like Ardipithecus showing mosaic traits. Environmental changes, such as shrinking forests and expanding grasslands, created selective pressures favoring bipedal locomotion. The human pelvis evolved to be shorter, wider, and curved, with muscles like the gluteus medius shifting to stabilize upright walking. Genetic changes in non-coding regulatory regions, not protein-coding genes, drive the developmental shifts in pelvic growth, with hundreds of small-effect changes involved. Bipedalism may have widened the birth canal, potentially enabling the evolution of larger brains in later hominins like Homo erectus . Humans have more slow-twitch muscle fibers than chimpanzees, supporting endurance activities like long-distance running, possibly linked to energetic trade-offs with brain growth. Shoulder and arm adaptations for throwing and tool use evolved more gradually, becoming prominent ~2 million years ago with Homo erectus . Reference paper: Study : The evolution of hominin bipedalism in two steps Related content: M&M 171 : Comparative Brain Evolution: Mammals, Primates & Humans | Robert Barton *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text The biological roots of sleep are tied to mitochondrial metabolism. Episode Summary: Dr. Gero Miesenböck discusses the evolutionary and metabolic basis of sleep, exploring how mitochondrial energy production in neurons, particularly in fruit flies, drives the need for sleep to manage harmful byproducts like reactive oxygen species and lipid peroxides. They discuss how sleep-inducing neurons sense these byproducts, the role of mitochondrial dynamics, and the broader implications for why all animals, from jellyfish to humans, require sleep. The conversation also touches on how body size and metabolism influence sleep needs across species. About the guest: Gero Miesenböck, MD is a professor of physiology at the University of Oxford, renowned for his pioneering work in optogenetics and his research on the neurobiology of sleep using fruit flies and mice. Discussion Points: Sleep is universal across animals, even in jellyfish without centralized brains, suggesting a fundamental metabolic purpose tied to mitochondrial energy production. Mitochondria produce energy efficiently using oxygen but generate reactive oxygen species that can damage cells through lipid peroxidation, necessitating sleep to repair this damage. Sleep-inducing neurons in fruit flies contain sensors that track lipid peroxidation products, acting like a digital memory to signal when sleep is needed. Smaller animals with faster metabolisms, like mice, require more sleep and have shorter lifespans due to higher oxygen consumption and oxidative stress. Mitochondrial diseases in humans often cause intense tiredness, likely due to increased electron leaks in the mitochondrial energy production process. The evolutionary origin of sleep likely stems from the oxygen revolution 2.5 billion years ago, enabling complex life but requiring mechanisms like sleep to manage metabolic side effects. Caloric restriction reduces sleep need by lowering the production of harmful metabolic byproducts, supporting the link between metabolism and sleep. Reference paper: Study : Mitochondrial origins of the pressure to sleep Related content: M&M 12 : Organisms, Cities, Companies & the Science of Scale | Geoffrey West *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text The surprising link between oral bacteria and heart disease. Episode Summary: Dr. Pekka Karhunen explains the connection between oral bacteria, cholesterol, and cardiovascular disease, discussing how oxidized LDL cholesterol triggers inflammation in arteries, how bacteria from the mouth can infiltrate arterial plaques to form biofilms, and the implications for heart disease prevention through lifestyle changes like better oral hygiene. About the guest: Pekka Karhunen, MD, PhD is a medical doctor and forensic pathologist with decades of experience, specializing in cardiovascular diseases. He has created a unique biobank of coronary arteries from over 10,000 autopsies conducted in Finland. His research focuses on the role of bacteria in atherosclerosis, particularly through studying coronary artery plaques. Discussion Points: Cholesterol is essential for life, but oxidized low-density lipoprotein (LDL) cholesterol is seen as a foreign substance by the immune system, leading to chronic inflammation in coronary arteries. Macrophages ingest oxidized LDL, turning into dysfunctional foam cells that contribute to plaque buildup, known as atheromas, in arteries. Plaque rupture, potentially caused by increased pressure from cholesterol accumulation or hemorrhage within the plaque, can trigger heart attacks. Bacteria, especially from the mouth, can enter arterial plaques via bacteremia (e.g., from dental procedures) and form biofilms, evading immune detection. Biofilms in plaques, made of extracellular matrix like polysaccharides, protect bacteria and may contribute to plaque instability or calcification over time. Poor oral hygiene is linked to higher cardiovascular disease risk, as bacteria from dental infections can enter plaques, suggesting dental care as a preventive measure. Karhunen’s research found oral bacteria, like Viridans streptococci , in coronary plaques, with unpublished data also detecting gut and skin bacteria, indicating diverse bacterial involvement. Related content: M&M 247 : Cholesterol: Immune Benefits, Heart Health, Statins & Research Malpractice | Uffe Ravnskov *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text How nutrition and medications impact mitochondrial health. Episode Summary: Dr. Chris Masterjohn talks about the intricate relationships between nutrition, prescription drugs, and mitochondrial health; how molecules like acetaminophen & SSRIs affect the body; broader implications of serotonin outside the brain; side effects of commonly used medications; the importance of personalized nutritional strategies to optimize mitochondrial function. About the guest: Chris Masterjohn, PhD holds a doctorate in nutritional sciences and is a co-founder of Mitome, a company focused on mitochondrial testing to optimize cellular energy production. Discussion Points: Acetaminophen & Inflammation: Acetaminophen (Tylenol) may contribute to chronic low-grade inflammation by blocking both the initiation and resolution of inflammation, potentially linked to health issues like autism when used during pregnancy. Serotonin’s Role Beyond the Brain : Approximately 95% of serotonin is found in the gut, regulating motility, with SSRIs causing side effects like nausea due to increased extracellular serotonin. SSRIs & Mitochondrial Function: SSRIs disrupt serotonin uptake into cells, reducing mitochondrial melatonin production, which impairs the body’s ability to handle hypoxic stress and produce ATP efficiently. Statins & Mitochondrial Impact: Statins, used to lower cholesterol, inhibit the mevalonate pathway, affecting not just cholesterol but also CoQ10 and vitamin K2, crucial for mitochondrial function, potentially leading to side effects like myopathy. Mitochondrial Testing with Mitome: Masterjohn’s company, Mitome, uses cheek swab tests to measure mitochondrial respiratory chain activity, providing personalized dietary and lifestyle recommendations to optimize cellular energy production. Nutrition & Mental Health: Masterjohn shares his personal experience of severe mental health issues on a vegan diet, which improved dramatically with a nutrient-dense diet rich in organ meats, highlighting individual nutritional needs. Energy Metabolism’s Universal Role: Mitochondrial ATP production governs everything from daily energy levels to long-term health, with personalized testing helping identify and address specific bottlenecks. *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text Genetic & environmental factors that affect brain health, including why people age faster in outer space. (Note: technical difficulties affected the audio quality of this recording somewhat) Episode Summary: Dr. Jacob Raber explains how apolipoproteins, particularly ApoE, influence brain health and disease risk; their role in cholesterol metabolism, Alzheimer’s disease, and responses to environmental stressors like radiation and viral infections; interplay between genetics, diet, and lifestyle factors, highlighting how these affect cognitive function and resilience to stress; research into space radiation, the gut-brain axis, and potential interventions for neurodegenerative diseases. About the guest: Jacob Raber, PhD, is a neuroscientist at Oregon Health & Science University (OHSU) in Portland, where he leads a lab studying genetic and environmental influences on brain health, particularly using mouse models with human genes. Discussion Points: Apolipoproteins (ApoE2, E3, E4) are proteins involved in cholesterol and lipid metabolism in the brain, with ApoE4 increasing risks for Alzheimer’s and cardiovascular disease. ApoE4 carriers may face higher risks for cognitive decline but could have advantages in specific contexts, like fertility or certain infections. Environmental stressors, such as space radiation and viral infections like West Nile, can exacerbate oxidative stress, impacting brain health. The gut microbiome influences brain function indirectly via the gut-liver-brain axis, with ongoing studies exploring its role in Alzheimer’s and traumatic brain injury. Lifestyle factors like diet, exercise, and sleep are critical for brain health, potentially mitigating genetic risks like ApoE4. Statins, commonly used for cholesterol management, may impair learning in healthy animals, suggesting context-dependent effects. Research into space radiation reveals potential therapeutic applications, such as using heavy ion radiation for cancer treatment. Genetic variations, including ethnicity and sex, influence ApoE-related disease risks, with women and certain populations showing higher Alzheimer’s susceptibility. Chronic low-level stressors, like air pollution, may pose greater risks to brain health than acute exposures due to insufficient activation of protective mechanisms. Related content: M&M 165 : PUFAs in Brain Health & Diseas Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text How maternal obesity epigenetically reprograms liver metabolism in offspring, predisposing them to metabolic disease. Episode Summary: Dr. Elvira Mass talks about macrophages, specialized immune cells that vary by tissue and play crucial roles beyond fighting infections, such as supporting organ function; Kupffer cells (liver macrophages) and how maternal obesity during pregnancy reprograms these cells in offspring, leading to fatty liver disease, fibrosis, and even cancer later in life, based on mouse studies showing epigenetic and metabolic shifts like increased glycolysis, with insights into developmental windows, nutritional mismatches, and broader implications for human health. About the guest: Elvira Mass, PhD, is a Professor of Developmental Immunology at the University of Bonn in Germany, where her lab focuses on the development and function of macrophages in various tissues. Discussion Points: Macrophages are diverse, tissue-specific cells that develop from embryonic precursors, performing unique tasks like providing growth factors in organs. Kupffer cells in the liver monitor blood from the gut and are exposed to maternal nutrients during fetal development. Maternal obesity (induced in mice via high-fat diets) programs offspring Kupffer cells epigenetically, leading to fatty liver in newborns and progression to diseases like cancer, even on normal diets. A "nutritional mismatch" between in utero high-fat exposure and postnatal normal diets worsens liver issues, as cells are "prepared" for excess high-fat intake but face scarcity. Key mechanism: Reprogrammed Kupffer cells overproduce apolipoproteins, driving excess lipid uptake in liver cells (hepatocytes), linked to transcription factor HIF-1α and a shift to inefficient glycolysis. Offspring from obese mothers show sex differences (males affected earlier) and persistent changes. Human parallels: Rising childhood fatty liver (once rare and tied to alcoholism) correlates with maternal obesity; studies like Dutch Hunger Winter show early gestational disruptions cause lifelong issues. Broader factors: Microbiome changes, specific fatty acids, and environmental toxins like microplastics may also reprogram macrophages; diets in studies vary beyond fat content, affecting results. Advice: Maintain consistent healthy habits pre- and during pregnancy; avoid sudden diet shifts, as developmental windows are critical for long-lived cells like Kupffer cells. Reference Paper: Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text Aging, tissue repair, and the longevity benefits of psilocin. Episode Summary: Dr. Louise Hecker discusses her research on tissue repair and regeneration, explaining how fibroblasts drive wound healing by forming scar tissue but fail to resolve properly with age, leading to fibrotic diseases like pulmonary fibrosis and liver cirrhosis; they discuss aging hallmarks such as oxidative stress and telomere shortening, and highlight Hecker's study showing psilocybin's active metabolite, psilocin, extends cellular lifespan in lab cultures by reducing oxidants and preserving telomeres, while monthly doses in aged mice improved appearance and survival rates. About the guest: Louise Hecker, PhD is an Associate Professor of Medicine at Baylor College of Medicine, specializing in repair and regeneration processes, particularly in aging and fibrotic diseases. Discussion Points: Fibroblasts are dormant cells that activate during injury to pull wounds closed and form scars, then de-differentiate or die; aging impairs this, causing persistent scarring and disease. Aging reduces the body's regenerative capacity; different organs vary in repair efficiency, with skin healing better than heart tissue. Oxidative stress, like "rust" in the body, accumulates with age due to imbalanced reactive oxygen species production and antioxidant defenses, contributing to cellular damage. Telomeres act as protective DNA caps that shorten with cell divisions, serving as a hallmark of biological aging; sirtuins are master regulators influencing aging processes. Hecker's in vitro study showed psilocin dose-dependently extended fibroblast lifespan by 29-50%, lowering oxidative stress below young cell levels and preserving telomeres. In aged mice (equivalent to 60-65 human years), monthly high-dose psilocybin (15 mg/kg) led to healthier appearance, regrown fur, and 80% survival when controls reached 50% mortality after 10 months. Psilocybin's effects may stem from serotonin receptors expressed in many cell types beyond the brain, suggesting broader anti-aging potential; future work explores mechanisms, optimal dosing, and applications for age-related diseases. Fungi like magic mushrooms represent an under-explored "kingdom" for medicine, with psilocybin's durable effects hinting at systemic impacts on aging. Reference Paper: Study : Psilocybin treatment extends cellular lifespan and improves survival of aged mice Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text The effects of protein restriction on metabolism, liver hormones, brain, and behavior. Episode Summary: Dr. Christopher Morrison talks about how animals sense and prioritize nutrients like protein, discussing defense mechanisms for essentials such as oxygen, water, sodium, and energy; the brain's role in detecting protein deprivation via signals like FGF21; trade-offs between growth, reproduction, and longevity under protein restriction; and reconciling high-protein diets for satiety and muscle maintenance with low-protein benefits for metabolic health and lifespan extension. About the guest: Christopher Morrison, PhD is a professor and researcher at the Pennington Biomedical Research Center in Baton Rouge, Louisiana, where he has worked for over 22 years focusing on nutrition, metabolism, and chronic diseases like obesity and diabetes. Discussion Points: The body prioritizes nutrients hierarchically: oxygen and water first, then sodium, energy, and protein, with weaker defenses for carbs or fats. Animals develop specific appetites for deprived nutrients, like salt or protein, often through post-ingestive learning rather than just taste. Protein restriction (e.g., 5% vs. 20% in diets) increases food intake and energy expenditure in mice to maintain protein levels, even at the cost of extra calories. FGF21, a liver hormone, signals protein deprivation to the brain (via NTS region), driving protein-seeking behavior and metabolic changes; it's essential for low-protein responses. Protein restriction extends lifespan in lab animals by suppressing growth signals like IGF-1 and mTOR, but may impair immunity or wound healing in real-world conditions. High protein aids satiety, weight loss, and muscle building, but overconsumption may shorten lifespan; optimal intake depends on age, activity, and goals (e.g., not for pregnant or elderly). No one-size-fits-all for protein: mild restriction may benefit middle-aged sedentary people for health, while athletes need more; balance avoids excesses. Related content: M&M 106 : Diet, Macronutrients, Micronutrients, Taste, Whole vs. Processed Food, Obesity & Weight Loss, Comparative Biology of Feeding Behavior | Stephen Simpson & David Raubenheimer *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text Where does biological complexity come from and how is it generated? Episode Summary: Dr. Michael Levin talks about cognition manifesting at scales beyond brains, including in cells and tissues via bioelectric networks; analog vs. digital coding in biology; how bioelectric patterns guide development and regeneration (e.g., in planarians); creation of novel life forms like xenobots and anthrobots; philosophical ideas on a "platonic space" of mathematical patterns influencing biology; evolutionary trade-offs in regeneration and implications for regenerative medicine. About the guest: Michael Levin, PhD is a biologist and computer scientist who directs the Allen Discovery Center at Tufts University, focusing on bioelectricity, regeneration, and cognition in non-neural systems. Discussion Points: Cognition isn't limited to brains; tools from neuroscience reveal learning, memory, and goal-directed behavior in cells and tissues. Bioelectricity acts as "cognitive glue," enabling collective intelligence in non-neural systems, predating multicellular life. Analog coding in development uses slow voltage patterns across cells, contrasting fast digital spikes in neurons. Planarians regenerate perfectly due to bioelectric "memories"; altering patterns creates stable two-headed worms without genetic changes. Regeneration trade-offs: Mammals prioritize quick healing over full regrowth due to infection risks and load-bearing needs. Xenobots (from frog cells) and anthropots (from human cells) self-assemble, replicate, and heal tissues, revealing untapped cellular potentials. Patterns in biology may stem from a "platonic space" of mathematical truths, not just evolution or physics. Neuroscience studies mind scaling, not just neurons; diverse intelligences could exist in non-cellular systems. Related content: M&M 95 : Purpose, Value, Evolution, Consciousness, Sentience, Life & Emergence of Mind From Matter | Terrence Deacon *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text Cellular clean up by immune cells and how early-life fructose exposure leads to neurodevelopmental problems. Episode Summary: Dr. Justin Perry talks about the body's constant cellular turnover—about 3 million cells die per second in adults (double in children and women)—handled by phagocytes like macrophages that engulf and digest debris to prevent diseases like lupus. They explore phagocytosis steps, macrophage adaptations in tissues like the brain (microglia), and how high fructose intake impairs microglial function in developing mice, leading to uncleared brain cells and anxiety-like behaviors, with implications for human neurodevelopmental disorders amid rising fructose consumption. About the guest: Justin Perry, PhD is an immunologist and clinical psychologist who leads a lab at Memorial Sloan Kettering Cancer Center focusing on how the body clears dead cells and debris to maintain homeostasis. Discussion Points: The body turns over 1-2% of its 30 trillion cells daily, mostly blood cells, but neurons in kids and endometrium in women turnover at ~2x this rate Phagocytosis involves "find me," "eat me," and digestion signals; failures can cause autoimmunity. Microglia are brain macrophages that uptake fructose via GLUT5 transporter. Early high fructose exposure (comparable to one soda daily) impairs the pruning of synapses and dead neurons. In mice, prenatal or postnatal fructose causes phagocytosis deficits in the prefrontal cortex, leading to heightened fear responses and poor fear extinction, mimicking anxiety disorders. Fructose correlates with rising neurodevelopmental issues like autism and anxiety; it's passed via breast milk, and liquid forms (e.g., sodas) overwhelm metabolic shields more than solid fruits. Macrophages may hold keys to diseases from atherosclerosis to cancer; deleting GLUT5 in microglia reverses fructose's effects, hinting at evolutionary roles in aging or low-oxygen states. Related content: M&M 215 : Cancer Metabolism: Sugar, Fructose, Lipids & Fasting | Gary Patti Article | Dietary Fructose & Metabolic Health: An Evolutionary Perspective Reference Paper: Study | Early life high fructose impairs microglial phagocytosis and neurodevelopment Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text The potential link between acetaminophen (Tylenol) and autism, with a surprise phone call from RFK partway through. Episode Summary: Dr. William Parker talks about autism spectrum disorder (ASD), its rising prevalence since the 1980s, and the controversial hypothesis that acetaminophen exposure in susceptible infants and children triggers most cases via oxidative stress. They discuss ASD's clinical definition; historical misconceptions like the "refrigerator mother" theory; genetic susceptibilities; acetaminophen's metabolism, which produces toxic byproducts in underdeveloped livers, leading to brain effects. About the guest: William Parker, PhD spent nearly 30 years as a professor at Duke University researching underlying causes of chronic conditions, including discovering the immune function of the human appendix and pioneering studies on immune systems in wild animals. Discussion Points: Autism is a spectrum disorder with core symptoms like social deficits, repetitive behaviors, and aversion to new stimuli. Parker argues overwhelming evidence points to acetaminophen as the primary trigger in susceptible individuals, causing oxidative stress via toxic metabolite NAPQI. Acetaminophen, marketed as Tylenol or paracetamol, was not tested for neurodevelopmental effects in neonatal animals until 2014, despite widespread use since 1886; it's metabolized differently in babies, whose livers lack mature detox pathways. Susceptibility factors include low glutathione (an antioxidant), poor sulfation/glucuronidation metabolism, folate receptor autoantibodies, and events like immune reactions that prompt acetaminophen use during oxidative stress. Regressive autism, where children lose milestones after seeming normal, often follows acetaminophen given for fevers or illnesses, explaining parental vaccine suspicions (as shots coincide with drug use). Adult acetaminophen is generally safe but causes liver toxicity in overdoses or with alcohol; antidote is NAC to boost glutathione. Parker has suggested to policymakers that we should avoid acetaminophen during pregnancy, birth, and early childhood (under age 3-5); parents should plan ahead for fevers/pain without it, but seek medical help for unusual symptoms. *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text Wide release date: August 25, 2025 Episode Summary: Dr. Uffe Ravnskov talks about his decades-long career challenging the idea that high cholesterol causes heart disease, discussing LDL's protective role in the immune system by binding to bacteria, the harms and biases in statin research influenced by pharmaceutical companies, evidence that high cholesterol benefits the elderly and reduces infection/cancer risks, and how mental stress or infections elevate cholesterol as a response rather than a cause. About the guest: Uffe Ravnskov, MD, PhD is a physician and independent researcher who earned his MD from the University of Copenhagen in 1961 and a PhD in nephrology. He has worked in various clinics in Sweden since the 1960s, focusing his research on challenging the cholesterol hypothesis in heart disease. Now 91, he has published over 200 papers, authored books like "The Cholesterol Myths.” Discussion Points: LDL cholesterol helps the immune system by sticking to bacteria, clumping them for removal; low LDL increases infection risk. Animal studies show injecting LDL protects against lethal infections, while historical data links severe infections to worse atherosclerosis. Elderly people with high cholesterol live longer; low cholesterol raises mortality risk more than high levels. Familial hypercholesterolemia (FH) doesn't cause early death via cholesterol alone—co-inherited coagulation factors are the issue, and FH patients often have lower infection rates. Statins lower LDL but increase infection risk, cause muscle weakness/brain issues (often blamed on aging), and show no clear benefit in unbiased meta-analyses. Research biases include cherry-picking studies, exaggerating benefits via relative (not absolute) risk, and pharma funding suppressing critical views. Mental stress can raise cholesterol by 10-50% in 30 minutes, often misread as a heart disease cause rather than an effect. Saturated fat and high cholesterol aren't proven harmful; Ancel Keys' claims ignored contradictory evidence. Stopping statins often reverses side effects quickly, improving quality of life. Related episode: M&M 244 : Seed Oils & Heart Disease: Oxidized LDL, Cholesterol, Fat & Cardiology | Tucker Goodrich Reference Paper: LDL-C does not cause cardiovascular diseas Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text The appendix's hidden role and how "good" parasites like helminths shape immune health. Episode Summary: Dr. William Parker discusses gut anatomy, the appendix's role in harboring beneficial bacterial biofilms and immune tissue, and how modern hygiene depletes helminths (intestinal worms), causing immune overreactions like allergies, autoimmunity, and psychiatric conditions. He explores helminth self-therapy for treating relapsing MS, depression, and allergies; challenges in clinical trials due to patent issues; and why COVID-19 was milder in low-income, helminth-rich regions. About the guest: William Parker, PhD conducted research at Duke University for over 27 years on immunology, appendicitis, and the hygiene hypothesis. After retiring from Duke, he serves as a visiting scholar at the University of North Carolina at Chapel Hill, leading efforts on biome reconstitution via helminths. Discussion Points: Appendix is not vestigial; it concentrates immune tissue and biofilms to cultivate good gut bacteria, preventing pathogens via mucus and IgA antibodies. Hygiene hypothesis: Soap, toilets, and clean water reduce helminths/protozoa, leading to untrained, hyperactive immunity and rising allergies/autoimmunity since the 1800s. Helminths (worms) stimulate immune "exercise," training immunity; biohackers use hookworms (cheap, skin-entry), porcine whipworms, or rat tapeworms orally for relief from allergies, MS flares, depression/anxiety. Effects are temporary; need ongoing exposure (e.g., replenish every 6 months); immigrants from helminth-rich areas develop Western diseases within a few years. COVID-19: Hyper-immunity caused severe reactions in hygienic West, but helminth presence in low-income Africa/Asia prevented cytokine storms, leading to empty clinics. Therapy barriers: Non-patentable organisms require $100M+ trials; push for open-source, government-funded biome restoration over crude immunosuppressants. Related episode: M&M 144 : Inflammation, Innate Immunity, Allergies & Allergens, Immune System Evolution, Fasting & Metabolism | Clare Bryant *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text What is the core evolved function of the endocannabinoid system? Episode Summary: Dr. Giovanni Marsicano is a neuroscientist based in Bordeaux, France, where he leads a research group at INSERM focusing on the endocannabinoid system. About the guest: Giovanni Marsicano, PhD discusses the endocannabinoid system, starting with its core components like CB1 receptors and lipid-based molecules derived from omega-6 fatty acids; its cellular signaling, evolutionary role in energy storage for uncertain futures (exostasis vs. homeostasis); effects across tissues; motivation, appetite, pain relief, and anxiety regulation; biphasic effects of cannabinoids. Discussion Points: The endocannabinoid system acts as an "exostatic" regulator, promoting energy accumulation for future needs by enhancing food palatability, nutrient absorption, and fat storage, unlike "endostatic" systems that address immediate hunger. CB1 receptors appear in vertebrates with adipose tissue, suggesting an evolutionary link to storing fat for survival in unstable environments. Endocannabinoids are lipids from omega-6 fats; high intake boosts their levels, potentially fueling obesity by creating a self-perpetuating cycle of overeating. Activation of CB1 can have biphasic effects due to receptors on different cell types like excitatory vs. inhibitory neurons. Pregnenolone, a steroid precursor, acts as a natural CB1 inhibitor to prevent excessive activation, blocking harmful effects like psychosis from high THC doses. The system influences motivation beyond food, including sex and even human activities like sports or storytelling, by rewarding actions for potential future benefits. In the brain, CB1 on mitochondria and astrocytes modulates energy use, olfaction, and social stress transmission, with implications for disorders like Alzheimer's. Reference Paper: CB1 Receptor as the Cornerstone of Exostasis Related episode: M&M 123 : Endocannabinoids, Stress, Anxiety, Cannabis | Matthew Hill *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text Overview and alternative interpretation to the mainstream view on how dietary fat and cholesterol relate to cardiovascular disease. Episode Summary: Tucker Goodrich is an engineer by training who has become a prominent independent researcher and blogger on nutrition and metabolic health, focusing on the harms of seed oils and polyunsaturated fats. About the guest: Nick Jikomes and Tucker Goodrich explore atherosclerosis and heart disease, critiquing the standard model that blames high LDL cholesterol while highlighting how oxidized LDL—driven by dietary linoleic acid from seed oils—plays a key role in plaque formation and inflammation; they discuss historical shifts in heart disease rates, genetic factors like familial hypercholesterolemia, the limitations of animal studies, and why reducing seed oil intake could prevent issues more effectively than just lowering cholesterol. Discussion Points: Atherosclerosis involves plaque buildup in arteries, often leading to heart attacks, but plaques contain oxidized fats and cholesterol, not just native cholesterol. Dietary cholesterol has little impact on blood levels or heart disease in humans, unlike in rabbits used in many studies. High LDL may not be inherently bad; oxidized LDL from polyunsaturated fatty acids (PUFAs) like linoleic acid causes macrophages to overeat and form harmful foam cells. Familial hypercholesterolemia patients only show higher heart disease rates in modern, industrial diets high in seed oils, not historically. Populations like the Kitavans and Tsimané have high apoB but no heart disease on traditional diets low in industrial foods. Fried foods are oxidized seed oils, explaining why they're unhealthy despite omega-6 fats being labeled "heart-healthy." Omega-3 fats can displace omega-6 in cells, reducing oxidation risk. Reference Papers: Witztum & Steinberg (1991) Boren et al. (2022) Related episode: M&M 136 : Seed Oils, Omega-6 PUFAs, Inflammation, Obesity, Diabetes, Chronic Disease & Metabolic Dysfunction | Chris Knobbe *Not medical advice. Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts

Send us a text Human metabolism, primate evolution, and modern health challenges with evolutionary anthropologist Herman Pontzer. Episode Summary: Anthropologist Dr. Herman Pontzer discusses human evolution and metabolism, comparing humans to primates like chimps and gorillas to explain our higher energy use, bigger brains, and longer lives despite trade-offs in reproduction and activity; they discuss dietary shifts from plant-based to hunting-gathering, metabolic adaptations, and modern issues like obesity, where exercise aids health but diet drives weight loss, emphasizing ultra-processed foods' role in overeating and the promise of new drugs like GLP-1 agonists. About the guest: Herman Pontzer, PhD is a professor of evolutionary anthropology and global health at Duke University. He is the author of books like "Burn" and "Adaptable," which explore how bodies adapt to diets, activity, and environments. Discussion Points: Humans burn 20% more daily energy than other primates (controlling for body size), enabling big brains, more babies, and longer lives, but requiring efficient food strategies like hunting and gathering. Unlike apes, humans evolved smaller guts, higher body fat (15-30% vs. apes' <10%), and mixed diets of animal and plant foods. Hunter-gatherers like the Hadza are far more active than sedentary Westerners but burn similar calories, as bodies adapt by reducing basal metabolism, inflammation, and hormones. Obesity stems more from increased calorie intake via ultra-processed foods than it does from reduced activity; exercise boosts health but rarely causes major weight loss on its own. Early humans likely scavenged rancid meat, evidenced by low stomach pH similar to vultures, aiding digestion of risky foods. Ketosis isn't unique to high-meat diets; even Inuit on low-carb diets resist it, and other carnivores don't stay in ketosis constantly. Across global populations, richer countries have higher BMI and slightly higher total energy expenditure due to larger bodies, but basal rates drop with lower pathogen loads. For weight loss, Dr. Pontzer points to diets high in fiber/protein for satiety; intermittent fasting works by cutting calories, not magic; GLP-1 drugs mimic hormones to curb hunger, although we stay mindful of potential long-term effects. Related episode: M&M 160 : Diet, Hunting, Culture and Evolution of Paleolithic Humans & Hun Support the show Affiliates: Lumen device to optimize your metabolism for weight loss or athletic performance. MINDMATTER gets you 15% off. AquaTru : Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models. Seed Oil Scout : Find restaurants with seed oil-free options, scan food products to see what they’re hiding, with this easy-to-use mobile app. KetoCitra —Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime) For all the ways you can support my efforts