Épisodes

  • Women and Alzheimer’s: A New Lead
    Aug 26 2025

    Why are nearly two-thirds of Alzheimer’s patients women? For decades, the explanation seemed simple: women live longer. But the numbers don’t add up. Even after 80, when survival rates even out, women are still more likely to be diagnosed. A new lead may finally expose what’s been hiding in sex-specific biology.


    00:00 Introduction: The Alzheimer's Gender Imbalance

    00:05 Uncovering Biological Clues

    01:39 The Role of Lipid Metabolism

    02:47 New Study Sheds Light

    03:49 Detailed Findings on Lipid Patterns

    09:43 Implications for Future Research and Treatment

    12:12 Conclusion: A New Lead in Alzheimer's Research


    PMID: 40832908

    Afficher plus Afficher moins
    14 min
  • The Case of the Missing Molecules
    Aug 21 2025

    Parkinson’s disease has long been defined by the death of neurons in the brain. Yet, decades before tremors appear, the first signs emerge quietly in the gut. Recent evidence reveals a puzzling disappearance: microbial pathways that once produced two well-known compounds fall silent. Their absence strips away protective metabolites, erodes the intestinal barrier, and leaves neurons exposed to toxins that ignite α-synuclein fibrils. Could the vanishing of two simple vitamins be an overlooked trigger, and a potential target, in the unfolding mystery of Parkinson’s disease?

    00:00 Introduction to Parkinson's Disease

    00:35 Early Signs and Gut Connection

    01:19 The Braak Hypothesis and Vagus Nerve

    02:08 Gut Microbiome and Vitamin Pathways

    03:10 Global Meta-Analysis and Key Findings

    04:37 Impact of Vitamin Deficiencies

    08:57 Potential for Vitamin Supplementation

    11:20 Conclusion and Future Implications


    PMID: 37314861

    Afficher plus Afficher moins
    12 min
  • Two Compounds That Recharge Aging Neurons
    Aug 19 2025

    In the aging brain, neurons begin to lose a hidden currency. Not just ATP, but GTP - that powers their ability to clear away toxic proteins. Without it, the cleanup crews stall, and amyloid builds up. A team at UC Irvine may have uncovered a way to recharge that system using two familiar compounds. In aged and Alzheimer’s model neurons, this pairing restored GTP, reactivated trafficking pathways, and swept away protein aggregates. In this episode, we follow the trail from dwindling cellular energy to revived cleanup machinery, and explore how these findings fit with human evidence.

    00:00 Introduction: The Overlooked Clue in Aging Brains

    00:47 The Energy Crisis in Aging Neurons

    01:21 Natural Compounds to the Rescue

    01:55 The UC Irvine Study: A Closer Look

    03:05 Mechanisms Behind Nicotinamide and EGCG

    04:37 Human Data: What Do We Know?

    06:59 Comparing Strategies: Drugs vs. Natural Compounds

    08:11 Challenges and Future Directions

    09:27 Conclusion: A Promising but Unproven Strategy


    PMID: 40661491

    Afficher plus Afficher moins
    10 min
  • The Microbes That Pay Your Energy Bill
    Aug 14 2025

    Your gut microbes don’t just digest food, they can power you. In this episode, we uncover a hidden energy stream: short-chain fatty acids produced when microbes ferment plant fibers, potentially supplying anywhere from 2% to 10% of your daily calories. A new Cell study quantifies this microbial contribution with a unique level of precision, revealing how dietary choices drives the yield. We look at the mechanisms behind this energy exchange, , and show why increasing fiber intake is one of the most potent, underappreciated tools for improving metabolic health immune function, disease resistance, etc. We can now say it also contributes to energy flux.

    00:00 Introduction: The Hidden Fuel Source

    00:13 The Role of Gut Microbes in Energy Production

    01:16 How Gut Microbes Transform Fiber into Energy

    02:49 Measuring Microbial Energy Contribution

    04:51 Impact of Diet on Microbial Energy Harvest

    06:32 Significance of Microbial Fermentation

    07:37 Implications for Human Health and Diet

    09:19 Conclusion: Feeding Your Microbial Partners

    PMID: 40744013

    Afficher plus Afficher moins
    9 min
  • Hidden in the Water: Lithium’s Secret
    Aug 12 2025

    What if one of the brain’s most important defenses was hiding in plain sight? In this episode, we take a look at lithium, a trace element found in water, food, and the brain itself. Long before brain scans, people made pilgrimages to lithium-rich springs, swearing the waters restored their health. A century later, it became a psychiatric drug. But new research from Harvard Medical School has uncovered something unique: lithium is a master regulator in the brain, and one of the earliest changes in Alzheimer’s disease is that it disappears. We follow the evidence from historical clues to modern lab discoveries, revealing how amyloid plaques trap lithium, how that loss accelerates neurodegeneration, and how restoring it at nutritional doses could help preserve memory (without the risks of high-dose therapy).

    00:00 Introduction: The Mystery of Aging and Dementia

    00:42 The History and Discovery of Lithium

    01:31 Lithium's Role in Mental Health

    01:53 Lithium and Cognitive Decline

    03:18 Harvard's Breakthrough Research

    05:01 Mechanisms of Lithium in the Brain

    07:34 Clinical Studies and Trials

    09:13 Nutritional Lithium: Dosage and Sources

    11:22 Conclusion: implying the brain is exquisitely sensitive to Li levels.


    PMID: 40770094

    PMID: 17401045

    PMID: 20148870

    PMID: 18981345

    PMID: 39212809

    PMID: 22746245

    PMID: 30066063

    Afficher plus Afficher moins
    12 min
  • The Glutathione-Motivation Link
    Aug 5 2025

    In this episode of Daily Value, we look into the biochemical foundations of motivation, emphasizing the critical role of glutathione, a primary antioxidant in the brain.

    Motivation is not merely a psychological trait, it is a metabolically demanding state that depends on the brain’s ability to manage oxidative stress. Central to this defense is glutathione, a tripeptide critical for maintaining redox homeostasis during sustained cognitive effort. In this episode, we look at recent research demonstrating that higher glutathione levels in the nucleus accumbens (a brain region involved in reward and effort) correlate with greater motivational capacity and resistance to cognitive fatigue.

    We consider how interventions like N-acetylcysteine (NAC), blueberry polyphenols, and others can enhance endogenous glutathione synthesis or activity through well-characterized biochemical pathways.

    Learn how to support glutathione status through diet and supplementation, with the goal of improving cognitive endurance, neuronal resilience, and sustained motivation under stress. This is a mechanistic deep dive into the intersection of neurobiology, nutrition, and performance.

    01:36 Understanding the Brain's Motivation Circuitry

    04:44 The Role of Glutathione in Motivation

    07:13 Scientific Studies on Glutathione and Motivation

    11:27 Boosting Glutathione Levels: Supplements and Nutrition

    15:30 Indirect Ways to Support Brain Glutathione

    20:48 Conclusion: Sustaining Motivation Through Antioxidant Support

    PMID: 36345724

    PMID: 34321478

    PMID: 35617813

    PMID: 33783984

    doi:10.3390/nu16081180

    Afficher plus Afficher moins
    23 min
  • The Neuroscience of Dietary Fiber
    Jul 31 2025

    In this episode of Daily Value, we look at the surprising connection between dietary fiber and cognitive health. Fiber isn’t just about digestion - it’s a powerful nutrient influencing your brain through the gut-brain axis. We’ll take a look at new research that reveals how optimal fiber intake may physically enhance and/or help maintain the structure of specific brain regions, important for memory and learning. Learn about the different types of fiber, their unique roles, and practical tips to boost cognitive performance through simple dietary choices.

    00:00 Introduction: You Are What You Eat

    00:56 The Importance of Dietary Fiber

    02:37 Fiber's Impact on Cognitive Function

    03:53 New Research on Fiber and Brain Health

    07:35 Mechanisms Behind Fiber's Brain Benefits

    13:59 Practical Tips for Increasing Fiber Intake

    16:30 Conclusion: Fiber for a Sharper Mind

    PMID: 38424099

    PMID: 40589779

    PMID: 33641478

    Afficher plus Afficher moins
    18 min
  • Optimizing Vitamin Uptake via the Microbiome
    Jul 1 2025

    In this episode of Daily Value, we evaluate the often-overlooked yet powerful connection between your gut microbiome and vitamin absorption. Going beyond basic nutrition, we’ll break down how gut bacteria directly influence your body's ability to synthesize and efficiently absorb essential vitamins through mechanisms such as transporter protein modulation, enzyme stimulation, and immune regulation. Practical and actionable insights are provided foster optimal gut health and nutritional status.

    00:00 Introduction to Gut Microbiome and Vitamin Absorption

    00:38 The Role of Gut Bacteria in Vitamin Synthesis and Absorption

    01:31 Recent Research and Practical Implications

    05:43 Mechanisms of Microbial Influence on Vitamin Absorption

    08:10 Actionable Steps to Optimize Your Microbiome

    10:37 Conclusion and Final Thoughts

    https://pubs.rsc.org/en/content/articlelanding/2024/fo/d4fo01805b

    https://pubs.rsc.org/en/content/articlelanding/2025/fo/d4fo04252b

    https://microbiomejournal.biomedcentral.com/articles/10.1186/s40168-024-01898-7

    Afficher plus Afficher moins
    11 min