Your Telomeres Are a Lie, Bats Beat Aging, Sleep Meds Ruin Mornings, CO's Silent Kill, and more... : 1431

Summary

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Podcast Summary

Podcast: The Human Upgrade: Biohacking for Longevity & Performance
Host: Dave Asprey
Episode Title: Your Telomeres Are a Lie, Bats Beat Aging, Sleep Meds Ruin Mornings, CO's Silent Kill, and more... (Ep. 1431)
Date: March 13, 2026

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Episode Overview

This weekly edition of The Human Upgrade with Dave Asprey delivers a rapid-fire roundup of the most thought-provoking recent research in biohacking, longevity, and performance optimization. The episode centers on a recurring theme: "The map is not the territory"—meaning established health metrics and popular science models often fall short of describing real-world outcomes. Dave highlights six stories challenging mainstream biohacking conventions, sharing actionable upgrades and practical experiments to help listeners better optimize their health, energy, and longevity.

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Main Discussion Points & Insights

1. Sleep Medications: The Hidden Trade-Off

[01:29–04:03]

• Recent trial shows the sleep drug suvorexant improves subjective sleep quality but worsens cognitive function, alertness, and fatigue the following morning.

• While users log better sleep metrics (fewer awakenings, higher scores), their most productive hours are compromised.

• Key Upgrade: Don’t just chase positive sleep-tracker scores. Instead, track your day-to-day energy and clarity at multiple time points to see the real effects of sleep interventions.

  Notable Quote:

  “This study is the first time I’ve seen clean data showing that what looks like a win on the dashboard can be quietly stealing your most productive hours.”
  — Dave Asprey, [02:42]

2. Telomeres, Bats, and Rethinking Aging

[04:04–06:00]

• A preprint study on the tropical bat Molossus molossus found these animals don’t show typical telomere shortening as they age, challenging the dominant model that equates shorter telomeres with biological aging.

• The longevity of these bats is likely due to mechanisms supporting DNA repair and oxidative stress management, not telomere length itself.

• Key Upgrade: Focus less on telomere-lengthening supplements and more on strategies that enhance DNA repair, mitochondrial function, and antioxidant capacity—such as NAD precursors, polyphenols, and metabolic flexibility training.

  Notable Quote:

  “Telomere length may be a symptom more than a cause, and we’ve been building an entire industry around measuring and extending a proxy instead of going after the deeper levers.”
  — Dave Asprey, [05:29]

3. The Fenugreek Glucose Hack

[06:01–07:04]

• Soaking fenugreek seeds overnight and consuming them (or their water) before a high-carb meal can reduce fasting and post-meal glucose spikes by 5–20%.
• Fenugreek’s galactomannan fiber slows carb absorption, and bioactives improve insulin sensitivity.
• Key Upgrade: Run a personal experiment using one tablespoon of soaked fenugreek seeds daily with the highest-carb meal, and monitor changes via a continuous glucose monitor (CGM) over 14 days.

4. Longevity Supplement Stacks That Actually Move the Needle

[07:05–08:57]

• A rare, rigorous randomized controlled trial found that a multi-ingredient longevity stack (targeting NAD, metabolism, glycation, and mitochondrial support) produced significant improvements in arterial stiffness and blood pressure, outperforming diet and single-ingredient interventions—even in healthy adults.

• Key Upgrade: Monitor at least one vascular marker (e.g., blood pressure, pulse wave velocity) to see how your supplement stack affects arterial health.

  Notable Quote:

  “The bigger point here isn’t the specific product, it’s that hitting NAD, metabolism, glycation control, and mitochondrial support simultaneously produce something that single ingredients consistently fail to do.”
  — Dave Asprey, [08:18]

5. The Silent Threat of Carbon Monoxide

[10:00–11:53]

• Carbon monoxide (CO) poisoning incidents are on the rise; CO binds to hemoglobin and starves organs of oxygen—without visible or olfactory warning signs.

• Symptoms (headache, fatigue, nausea, confusion) mimic poor sleep or stress, leading to misattribution.

• Key Upgrade: Immediately check your CO detectors—ensure they’re present, not expired, and installed on all floors, especially near bedrooms. Also, schedule annual inspections of heating systems.

  Notable Quote:

  “This is one of the highest leverage, lowest effort things you can do for your household’s health. And it costs almost nothing.”
  — Dave Asprey, [11:47]

6. Rethinking Fat and Carbs: The Exercise Exception

[11:54–13:47]

• New research suggests eating fat with carbs during high-carb training periods can improve post-exercise metabolic health, including insulin sensitivity and fat oxidation—even as blood glucose rises.

• This challenges keto/carnivore dogma that fats and carbs shouldn’t be mixed, revealing that under the stress of exercise, metabolic flexibility is optimized by this combined approach.

• Key Upgrade: Try pairing quality fats and carbs around at least one workout per week, use CGM to track response and measure next-morning HRV for recovery assessment.

  Notable Quote:

  “You’re building metabolic flexibility in real time using the training context as the teacher.”
  — Dave Asprey, [13:06]

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Overarching Theme: Metrics Aren’t the Full Story

[13:48–14:29]

• Dave reiterates the episode’s essential lesson: Popular metrics—sleep scores, telomere length, macro ratios—do not fully represent health, performance, or longevity. True health is nuanced, contextual, and deeply individual.

• New tools now allow for personal experiments and better measurement, challenging listeners to go beyond the simplified frameworks and “map” of health to the complex “territory” of human biology.

  Notable Quote:

  “Your sleep score is not your performance. Your telomere length is not your lifespan. Your macro ratio is not your metabolic health. And sometimes the threat isn’t even on the map at all.”
  — Dave Asprey, [13:53]

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Timestamps for Key Segments

• [01:29–04:03] – Sleep meds and the hidden cost to morning performance
• [04:04–06:00] – Bat aging research and telomeres reconsidered
• [06:01–07:04] – Fenugreek for glucose control
• [07:05–08:57] – Longevity supplement stack clinical trial
• [10:00–11:53] – Carbon monoxide: the invisible biohacking threat
• [11:54–13:47] – Fat and carbs during exercise: sometimes, opposites attract
• [13:48–14:29] – The limits of metrics and embracing bio-individuality

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Memorable Quotes

• “What looks like a win on the dashboard can be quietly stealing your most productive hours.” —Dave Asprey, [02:42]
• “Telomere length may be a symptom more than a cause.” —Dave Asprey, [05:29]
• “Hitting NAD, metabolism, glycation control, and mitochondrial support simultaneously produce something that single ingredients consistently fail to do.” —Dave Asprey, [08:18]
• “This is one of the highest leverage, lowest effort things you can do for your household’s health.” —Dave Asprey, [11:47]
• “You’re building metabolic flexibility in real time using the training context as the teacher.” —Dave Asprey, [13:06]
• “Your sleep score is not your performance. Your telomere length is not your lifespan. Your macro ratio is not your metabolic health.”—Dave Asprey, [13:53]

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Final Thoughts

This episode encourages listeners to move beyond surface-level numbers and popular narratives in biohacking. Dave Asprey advocates for a smarter, more comprehensive, and personalized approach—experimenting, measuring real-time effects, and embracing complexity in pursuit of true human upgrade.

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Transcript

[A]

I'm Dave asprey. That's Dave spelled D A I V E and this is your 10 minute weekly upgrade on the biggest stories in biohacking, longevity and the world of health.

[B]

Let's go.

[A]

Modern life keeps your nervous system in overdrive Most solutions try to change your brain chemistry, but your body also runs on electrical signals and rhythms. Your brain uses electrical waves, your heart beats in patterns, and your nervous system sends signals through tiny pulses. Light and sound are also forms of energy your body can sense. Scientists have studied them for decades because certain wavelengths and frequencies influence how cells and nerves respond. That's why I use the One Device. It combines light and sound in a wearable. It sends gentle signals your body can respond to while you work, meditate or wind down. Most wearables just track stress. The One device supports your nervous system directly without Bluetooth or emfs. People who wear it report sleeping more deeply and feeling calmer, more focused, energized and grounded. It's wearable frequency support you can use all day long. Learn more at the1device.com Dave.

[B]

Welcome back to the Human Upgrade. And this week the research caught up with something I've been saying for a long time, the Dash dashboard is not the destination. We've got six stories this week that are all in one way or another, about the difference between optimizing a metric and actually upgrading your life. We're getting into sleep meds that backfire in the morning. A bat species that's quietly breaking the Telomere model, a cheap kitchen hack that flattens glucose spikes, and a few others that are going to make you rethink some things you thought were settled. Let's get into it. A new trial used a smartphone app to pulse users throughout the day, not just the next morning, to capture fatigue, cognitive sharpness and mood in real time. What they found is that suvrexant, one of the more popular prescription sleep drugs, does improve sleep quality scores. People felt like they slept better, woke up less, and reported deeper sleep. But here's the catch. Their mornings were worse. More fatigue, less alertness, worse cognitive function in the early hours, even as their afternoons and evenings actually improved. This is something I've been watching for years, and I think it's one of the most underappreciated traps in the whole biohacking space. We've all been conditioned to chase the sleep score. 8 hours high HRV, good deep sleep percentage green across the board. Right? But this study is the first time I've seen clean data showing that what looks like a win on the dashboard can be quietly stealing your most productive hours. The drug is reshaping your brain's arousal architecture all day long, not just at night. You're trading a sharp 7am for a better 3pm and most people have no idea that's the deal they're making because they're only looking at the sleep side of the equation. The upgrade here is simple, but most people skip it. Start tracking your time of day performance, not just your sleep. A quick one to five clarity and energy sport every two hours for two weeks will tell you more about whether your sleep stack is actually working than any wearable on the market. Here's one from left field that I genuinely didn't see coming. A new preprint out of Bioarxive looked at a tropical bat species, Molossus molossus, and found that these animals live unusually long lives for their size, with almost no telomere shortening over time. If you've spent any time in the longevity space, you know that telomere erosion has been one of the central models for how and why we age. The shorter your telomeres, the older your biological clock. That's been the framework and a lot of supplements, protocols and even consumer tests have been built around it. I want to be careful here, because I'm not saying telomeres don't matter. They do. But this bat paper is pointing at something I've suspected for a while. Telomere length may be a symptom more than a cause, and we've been building an entire industry around measuring and extending a proxy instead of going after the deeper levers. What these bats seem to have figured out evolutionarily is superior DNA repair and oxidative stress management, driven by the metabolic demands of flight. High intensity, intermittent, efficient. Sound familiar? The mechanisms keeping these bats young aren't about end caps on chromosomes. They're about how the cell handles metabolic stress and keeps its genome clean over time. The practical shift here is to rebalance your longevity stack away from telomere lengthening marketing and toward things that actually support DNA repair, mitochondrial efficiency and antioxidant capacity, NAD precursors, quality polyphenols and metabolic flexibility training. Those aren't new ideas, but this study puts them back at the top of the hierarchy, where they belong. This one is almost embarrassingly simple, which is exactly why I love it. Soaking fenugreek seeds overnight and either chewing them or drinking the water has been shown across several small human trials to cut fasting glucose and post meal glucose spikes by somewhere between 5 and 20% no prescription. No proprietary blend. No 90 bottle. Just seeds that have been sitting in kitchens across South Asia for centuries. Here's what's actually happening mechanically. Fenugreek is loaded with soluble fiber galactomannan type compounds that physically slow down how fast carbohydrates get absorbed in your gut. You're compressing the spike into a broader lower curve. On top of that, there's evidence the bioactives in the seed improve insulin receptor sensitivity in muscle and liver. So you're hitting glucose management from two directions at once. For anyone tracking with a cgm, this is a dream experiment. You can literally watch the post meal area under the curve drop in real time. The upgrade Soak a tablespoon of fenugreek seeds overnight, drink the water and chew the seeds before your highest carb meal of the day and run it for 14 days against your CGM data. 5 to 20% is a meaningful range. Find out where you fall here's something you almost never see in the supplement world. A randomized double blind placebo controlled trial. The thing pharma companies do just came out on a multi ingredient longevity stack out of the University of Surrey. Six months healthy adults over 40 and they didn't measure how people felt. They measured how stiff your arteries are, how well your vessels dilate and systolic blood pressure. All three moved against placebo at the same time. The numbers are worth saying out loud. Arterial stiffness improved by 1.18 meters per second and aging typically moves that marker about 1 meter per decade. Blood pressure dropped 6 millimeters of mercury in people already in the normal range, which beat aerobic exercise, HIIT, the DASH diet, omega 3s and magnesium. In direct comparisons, endothelial function improved two to three times more than cocoa, flavanols, green tea and resveratrol in healthy people. That's the part that usually kills these results. Healthy populations are hard to move. The bigger point here isn't the specific product, it's that hitting nad, metabolism, glycation control and mitochondrial support simultaneously produce something that single ingredients consistently fail to do. The pathways talk to each other. If you're not tracking at least one vascular marker, blood pressure trends, pulse wave velocity. Something you don't actually know what your stack is doing to your arterial age.

[A]

Staring at screens all day is wrecking your vision and your brain. You might just think it's aging, but it's not. It's a broken eye brain connection and it gets worse every hour you spend looking at a screen. If you plan to live to 180 and beyond, you need to protect your dominant sense. Now here's the good news. You can train your visual system just like you train your body or your brain. Screen Fit is a science backed method built by Dr. Bryce Applebaum that rebuilds how your brain and eyes work together. No eye drops, no appointments, no gimmicks. Just 15 minutes a day to sharpen focus, reduce fatigue and protect your vision

[B]

for the long haul.

[A]

I saw real results in just a week. If you strive for peak performance or plan to live a very long time like I do, you want clear vision to match, go to screenfit.com Dave or use code Dave to get $200 off and try it for yourself. You'll see what I mean. Literally.

[B]

Maryland just reported that carbon monoxide exposure cases are up nearly 50% in 2026 compared to last year. 167er visits last year, 251 so far this year. And the CDC says more than 400Americans die from unintentional CO poisoning every single year. This isn't a fringe risk. It's happening in ordinary homes with ordinary heating systems and people who had no idea anything was wrong. Here's why this one bothers me. Carbon monoxide binds to your hemoglobin more tightly than oxygen does. So your blood is circulating, your heart is pumping. Everything looks fine from the outside, but your cells are slowly starving for oxygen. Brain, heart, muscles. And the symptoms. Headache, fatigue, nausea. A little confused. Sound familiar? That's half the things people blame on bad sleep or stress or diet. The insidious part is that CO is colorless, odorless, completely silent. And by the time most people feel bad enough to leave the house, their blood is already saturated with it. I've talked for years about environmental toxins as a stealth performance killer. This is the most literal version of that. The upgrade here is simple, and it takes 10 minutes. Go check your CO detectors right now. Not just that they exist, but that they're on every level of your home and especially near bedrooms. And that they're not expired. Most people don't know detectors have a lifespan of five to seven years. Also, get your furnace and water heater inspected annually. That's it. This is one of the highest leverage, lowest effort things you can do for your household's health. And it costs almost nothing. Last one. And this one is going to make some low carb purists uncomfortable. A 2026 study found that eating more fat around a higher carb period during exercise can actually improve metabolic outcomes, including insulin sensitivity and fat oxidation in the recovery window even when blood glucose is elevated. The traditional rule has been don't stack fat and carbs, especially around a glucose spike. It's the foundational logic behind a lot of keto and carnivore thinking. And now there's data suggesting that in the context of exercise that calculus flips. Here's the mechanism and why I think it makes sense. When you're training hard, your body is in a mixed fuel state. It needs glucose for immediate output, but it also needs fat oxidation for sustained performance and recovery. When you bring fat into that environment, you're not just adding calories, you're teaching the liver and muscle to manage glucose and fat concurrently. You're building metabolic flexibility in real time using the training context as the teacher post exercise. The result is better insulin sensitivity and lower fat storage signaling because the system just ran a high performance drill. This is actually very consistent with what I've believed about metabolic flexibility being the master skill of longevity. The Upgrade Design at least one training day per week where you intentionally eat fat and quality carbs together around your workout before, during or after, and track your CGM response and next morning hrv if there's a theme connecting all six of these stories, it's this. The map is not the territory. Your sleep score is not your performance. Your telomere length is not your lifespan. Your macro ratio is not your metabolic health. And sometimes the threat is isn't even on the map at all. It's invisible, odorless, and showing up in your ER data before anyone thinks to look. Every one of these stories is pointing at the same thing. The underlying biology is more complex, more contextual, and more personal than the simplified frameworks we've been handed. The good news is that the tools to actually measure what's happening in your body have never been more accessible, and I will continue to make them available for you each and every week.

[A]

All right, guys, that is your weekly biohacking roundup. Join me again next Friday for another rundown of the biggest health stories in the news. Enjoy your weekend.

[C]

A Human Upgrade, formerly Bulletproof Radio, was created and is hosted by Dave Asprey. The information contained in this podcast is provided for informational purposes only and is not intended for the purposes of diagnosing, treating, curing, or preventing any disease. Before using any products referenced on the podcast, consult with your healthcare provider carefully, read all labels, and heed all directions and cautions that accompany the products. Information found or received through the podcast should not be used in place of a consultation or advice from a healthcare provider. If you suspect you have a medical problem or should you have any healthcare questions, please promptly call or see your healthcare provider. This podcast, including Dave Asprey and the producers, disclaim responsibility for any possible adverse effects from the use of information contained herein. Opinions of guests are their own and this podcast does not endorse or accept responsibility for statements made by guests. This podcast does not make any representations or warranties about guest qualifications or credibility. This podcast may contain paid endorsements and advertisements for products or services. Individuals on this podcast may have a direct or indirect financial interest in products or services referred to herein. This podcast is owned by Bulletproof Media.