Depressing Fruit, Vitamin (C)ancer, Sheep Wool, Oral GLP-1s, Endless Exercise, and more : 1519 - The Human Upgrade: Biohacking for Longevity & Performance

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[00:01]
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. Let's go. Your body creates energy every second of every day. That process also creates wear and tear, which accelerates aging. Your mitochondria are at the center of this. They act like cellular engines. As they run, they produce oxidative exhaust in the form of free radicals. Over time, that oxidative load builds up and affects how efficiently those engines produce energy. ESS60 from MyVital C helps address this. It works like a nanoscale vacuum for your cells and helps clear out the leftover stress that builds up during normal energy production. Its structure allows it to reach the parts of your cells where energy production happens and supports steadier energy output over time. That shows up as better recovery, a sharper brain, and more energy throughout your day. It's a staple in my routine. Go to myvitalc.com/a V E S F A V to get the special offer and save up to $212 on your first order. A biotech company called Phenonet just got FDA clearance to start a phase three trial for an inhaled version of cromolyn sodium, a drug that's been used safely for Asthma since the 1970s. What makes this one different is that it's not limited to people carrying the APOE4 gene, which is normally the gatekeeping criteria for Alzheimer's drugs. This trial includes carriers and non carriers both, and they're stratifying the data by genotype to see who actually benefits. We've spent a decade watching amyloid clearing drugs like Leukembi get approved with marginal benefits and real safety concerns, mostly because they only work on a narrow slice of patients carrying a specific gene. Phenonet is taking a decades old, dirt cheap, extremely well understood molecule and asking a smarter does inflammation and microglial cleanup matter more than we've been told? I've argued for years that neuroinflammation drives cognitive decline as much as plaque does, and this trial design is basically betting on that same idea. Doctors have historically told non APOE4 carriers there's not much on offer for them. This is a signal that might change if Alzheimer's runs in your family. Get your APOE 4 status tested now so you know exactly which trials and treatments will apply to you when they land. Next up, researchers at the University of Zurich just found a group of cells they're calling regenerative astrocytes and what they do is genuinely wild. Astrocytes are the support cells that feed your neurons and keep brain tissue healthy. And the old assumption was that once you lose a bunch of them to injury or disease, the adult brain can't really replace them. Turns out that's wrong. These regenerative astrocytes gather around the edge of damaged tissue, divide, and then send the new nuclei from their daughter cells traveling across long distances through their own extensions through to repopulate the injury site and knit the whole network back together. The working assumption in neurology has been that adult brain damage is mostly permanent. You manage it, you don't reverse it. This says the brain already has a repair system built in. The researchers also mapped out the genes and signaling pathways that switch on during this process, which means there's now a target list for anyone trying to figure out how to boost this repair mechanism on purpose. And instead of waiting for the brain to do it on its own timeline, if you're dealing with any kind of brain injury or recovery, don't let anyone tell you the damage is simply permanent. Push for the most current research on regenerative therapies before you accept that as the final word. Another fun story here. The folks at King's College London took keratin, the protein extracted from sheep's wool, and turned it into a scaffold material for bone regeneration. They tested it against collagen, which has been the gold standard in bone and dental repair for decades. First on human bone cells in the lab and then in rats with skull defects large enough that they wouldn't heal naturally. Collagen still produced more total bone volume, but the bone grown with the keratin scaffold was more organized, more structurally sound, and closer to what natural, healthy bone actually looks like. This distinction is one to keep in mind. Because collagen is soft, it degrades fast, and it's never held up well for weight bearing bone, which is a real limitation if you're talking about any serious repair. Keratin held its structure during healing and integrated cleanly with the surrounding tissue, which are the two things you actually need for a scaffold to work in a real patient, not just a lab dish. And there's a sustainability angle as well. Wool is a waste byproduct of the farming industry that gets thrown out at scale. And collagen extraction is expensive and complicated by comparison. So you've got a material that's cheaper to source, better for the planet, and produces a structurally superior result. This is great news if you're facing any kind of bone graft, dental implant or craniofacial repair in the coming years. Ask your surgeon whether keratin based scaffolds have entered clinical trials yet, because this has real potential to replace collagen as the default for story 4 a company called Structure Therapeutics published phase 2B data on an oral GLP1 pill called Alina Glipron, and at the highest dose, people lost over 12% of their body weight in 36 weeks, with 16% showing up in the open label extension. That puts it in the same range as what people get from Wegovy and Ozempic, except it's a pill instead of a weekly injection. Longevity aside, I've stayed skeptical of certain uses of injectable GLP1s because of muscle loss and rebound weight gain the moment people stop. But I can't ignore that an oral option changes the compliance equation completely. Needles are a real barrier for a lot of people, and a pill that doesn't plateau after 36 weeks is worth watching closely. My concern hasn't moved, though, for part of this GLP conversation. None of these drugs address why people gained the weight in the first place, whether that's insulin resistance, mitochondrial dysfunction, or food engineered to be addictive. A pill is easier to take, but it's still a patch on a problem that has a greater cause. What if you could make your brain Sharper in just 10 to 15 minutes a day? Focus comes down to how well your mitochondria are working, because that's how your brain makes energy. When your mitochondria slow down, you get brain fog, fatigue, and low motivation. Light changes how that system behaves. Scientists have been studying near infrared light for years because of how it interacts with mitochondria and supports energy production in your brain. And that's why I've been using Neuronic. It's a wearable light therapy device for your head that uses near infrared light to support clarity, focus and overall brain performance at home without adding another complicated routine. It is simple to use, easy to stick with, and fits into your day in just a few minutes. If you're ready to ditch brain fog or you just want better mental performance, this is a straightforward tool to add. Go to Neuronic online and use code Dave for $100 off a lot of looking good is about biology. Your hair, your skin, just how you look. It's all a reflection of what's happening inside your body, and you can influence that directly. Red light therapy is one of the most powerful ways to do it. The right wavelength of light reactivates mitochondria in your cells, it wakes up dormant hair follicles and it accelerates your collagen production. And it works at the source. Irestore has been building clinical grade devices for this for over two decades. The iRestore Elite uses 300 lasers and 200 LEDs to stimulate hair regrowth across your entire scalp. People start seeing thicker, healthier hair in about three months. The Illumina face mask has 360 medical grade LEDs and provides red, infrared and blue light skin simultaneously red and infrared for collagen, anti aging and blood flow and blue to control bacteria and acne and pore size 10 minutes a few times a week and it just works. You can get both the Elite and the Illumina as a bundle right now at a big discount and I use both as part of my longevity protocol. Irestore is so confident in their products that they offer a 12 month money back guarantee. That's a huge deal, but I don't think you'll want to give it back after you see the results. Go to irestore.com, use code Dave for major savings. Again, it's irestore.com Dave. This one is for those of us who are exercise complacent and just want to know the minimal effective dose. A study out of Maau Polytechnic University tracked over 17,000 people from the UK Biobank and found that the standard device of 150 minutes of exercise a week only lowers cardiovascular risk by about 8 or 9%. To get real protection over 30% risk reduction, you need somewhere between 560 and 610 minutes a week. That's three to four times the official guideline. Only 12% of people in the study hit that number. This is exactly what I mean when I say public health guidelines are calibrated to be the bare minimum that keeps the average sedentary person from falling apart, not the amount that optimizes your health. Regulators built the 150 minute number as a floor, not a target. Now I know I've spoken on my show about how I normally do 15 to 20 minutes of exercise a week, but that's because I have a lot of fancy biohacking gear at my disposal. If you don't have that and are exercising the old fashioned way and want real cardiovascular protection, you're probably looking at closer to an hour a day and that number drops slightly if your baseline fitness is already high. Individual times aside, remember the government is not your health daddy, so stop treating the government exercise minimum as your goal. Treat it as your floor and build toward closer to 60 minutes a day, especially if heart disease runs in your family. We'll finish with this one. New research is finally clarifying something that's been controversial since the 1970s, when Linus Pauling claimed high dose vitamin C helped cancer patients and follow up studies using oral vitamin C found nothing. Turns out pollen had the mechanism right and the delivery method wrong. Oral vitamin C caps out around 200 micromoles per liter in your blood because your gut regulates how much gets absorbed. IV vitamin C skips that limit entirely and can push plasma levels up to 100 times higher. At those concentrations it starts generating hydrogen peroxide and that peroxide turns out to be selectively toxic to cancer cells because they carry less catalase to break it down than healthy cells do. A 2024 University of Iowa study found IV vitamin C plus chemotherapy doubled overall survival in advanced pancreatic cancer patients. This is one of the most satisfying vindications I've seen in a while. I've talked about IV vitamin C on this show many, many times and the mainstream response always dismissed Pauling ent instead of asking why oral and IV routes might behave so differently in the body, people make that same mistake with a lot of supplements, assuming a nutrient works the same way no matter how you take it. When dose and delivery change everything. This doesn't mean go find a wellness clinic and start doing 40 gram infusions on your own. But if you or someone you love is facing a cancer diagnosis, this is a conversation worth having with an integrative oncologist. If IV vitamin C comes up during cancer treatment, don't write it off as fringe or woo woo naturopathic and ask specifically whether your doctors are pairing it with chemotherapy, not swapping it in for chemotherapy. If you only remember one thing from this episode, make it the vitamin C story. It's not the flashiest data of the week, but it's proof of something I think people get wrong constantly. We spent 50 years treating Linus Pauling as a punchline because one study used the wrong delivery method and an entire avenue of cancer treatment got shelved as a result. That should bother you. Underneath the vitamin C details, this is really a story about how easily good ideas get killed by one bad experiment and a media cycle that never bothers to go back and check. Think about how often you've done the same thing in your own life. You try something once, it doesn't work and you file it away as doesn't work forever. When the actual problem was how you tried it, not whether it was worth trying. A diet that failed because you did it wrong, a supplement you wrote off because you took it at the wrong dose or the wrong time, a relationship approach, a business idea, a workout style all shelved permanently because of one flawed attempt nobody ever revisited. The lesson from Pauling isn't about vitamin C at all. It's to go back and check the things you already gave up on because you might be sitting on your own 50 year old mistake. I'll see you next time. Alright 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.
[13:58]
B
Foreign. 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.

Summary5 min read

Podcast Summary: The Human Upgrade with Dave Asprey
Episode 1519 — "Depressing Fruit, Vitamin (C)ancer, Sheep Wool, Oral GLP-1s, Endless Exercise, and more"
Date: August 14, 2026
Host: Dave Asprey

Episode Overview

In this weekly 10-minute roundup, Dave Asprey covers the latest and most significant stories in biohacking, longevity, and health optimization. He dives into recent research updates, biotech innovations, and health protocols, emphasizing actionable insights and challenging mainstream medical assumptions. This episode's highlight is a deep look at breakthroughs ranging from Alzheimer's treatments and regenerative brain cells to the true effective dose of exercise and the vindication of high-dose vitamin C in cancer therapy.

Key Topics and Insights

1. Breakthrough Alzheimer’s Drug Trial

[02:02]

New Phase 3 Trial by Phenonet:
- Inhaled cromolyn sodium, an old and safe asthma drug, is being tested for Alzheimer’s.
- Key Innovation: Includes both APOE4 gene carriers and non-carriers—unlike most other trials.
- Focus is on testing whether neuroinflammation and microglial cleanup are more important targets than amyloid plaques.
Dave’s Take:
- “Doctors have historically told non-APOE4 carriers there’s not much on offer for them. This is a signal that might change…” — [02:33]
- Urges listeners to get their APOE4 gene status tested to stay informed on applicable treatments.

2. Regenerative Astrocytes: Brain’s Secret Repair System

[03:13]

Research from University of Zurich:
- Identification of “regenerative astrocytes,” which can divide and send new nuclei long distances to repair brain tissue after injury.
- Old Assumption Debunked: Adult brain damage is not always permanent—brain has built-in repair.
- Researchers mapped the genes and pathways involved, offering new therapeutic targets.
Dave’s Message:
- “Don’t let anyone tell you the damage is simply permanent. Push for the most current research on regenerative therapies…” — [04:04]

3. Sheep Wool Keratin: The Next-Gen Bone Scaffold

[05:01]

King's College London Research:
- Sheep’s wool keratin used as a scaffold for bone regeneration.
- Tested better structural results than traditional collagen for bone healing; more naturally organized and durable.
- Sustainability Angle: Keratin is a farming byproduct, inexpensive and eco-friendly versus collagen.
Dave’s Suggestion:
- “Ask your surgeon whether keratin-based scaffolds have entered clinical trials yet, because this has real potential to replace collagen…” — [05:59]

4. Oral GLP-1 Pill for Weight Loss

[06:26]

Structure Therapeutics' Alina Glipron:
- Oral GLP-1 pill yields 12%+ body weight loss in 36 weeks—comparable to injections but much easier to take.
- Dave remains cautious: “None of these drugs address why people gained the weight in the first place…”
Dave’s Insight:
- “A pill is easier…but it’s still a patch on a problem that has a greater cause.” — [07:17]

5. Exercise Guidelines: Rethinking the Minimum Effective Dose

[09:15]

Maau Polytechnic University Study:
- Standard 150 min/week of exercise only gets 8-9% cardiovascular risk reduction.
- Optimal Reduction (>30%) requires 560–610 min/week exercise—about an hour per day.
- Only 12% of people hit this dose.
Dave’s Advice:
- “The government is not your health daddy, so stop treating the government exercise minimum as your goal. Treat it as your floor…” — [10:50]

6. Vitamin C and Cancer: The Real Story

[11:39]

Revisiting Linus Pauling’s Claims:
- Historical studies dismissed vitamin C in cancer because they used oral, not IV, dosing.
- New Evidence: IV vitamin C achieves much higher blood levels, generates hydrogen peroxide, selectively toxic to cancer cells.
- 2024 University of Iowa study: IV vitamin C plus chemotherapy doubled survival in advanced pancreatic cancer.
Dave’s Reflection:
- “We spent 50 years treating Linus Pauling as a punchline because one study used the wrong delivery method and an entire avenue of cancer treatment got shelved as a result. That should bother you.” — [12:34]
- Meta-Lesson: Rethink things you’ve written off based on old or flawed attempts.

Notable Quotes & Memorable Moments

On New Alzheimer’s Trial Designs:
- “This trial design is basically betting on that same idea—does inflammation and microglial cleanup matter more than we’ve been told?” — [02:19]
On Brain Injury Recovery:
- “This says the brain already has a repair system built in.” — [03:47]
On Government Exercise Guidelines:
- “Regulators built the 150 minute number as a floor, not a target.” — [10:33]
On Vitamin C Therapy:
- “If IV vitamin C comes up during cancer treatment, don’t write it off as fringe or woo-woo naturopathic…” — [12:13]
Episode’s Meta-Lesson:
- “The lesson from Pauling isn’t about vitamin C at all. It’s to go back and check the things you already gave up on because you might be sitting on your own 50 year old mistake.” — [13:42]

Timestamps for Important Segments

[01:50] — Alzheimer’s Drug Trial (Phenonet/cromolyn sodium)
[03:13] — Discovery of regenerative astrocytes in the adult brain
[05:01] — Sheep wool keratin scaffold research for bone repair
[06:26] — Oral GLP-1 pill weight loss results and implications
[09:15] — New data on required exercise volume for significant heart health
[11:39] — High-dose IV Vitamin C in cancer; meta-lesson

Actionable Takeaways

Personalized Medicine: Get your APOE4 gene status checked if Alzheimer’s runs in the family.
Injury Recovery: Ask healthcare professionals about cutting-edge regenerative therapies rather than assuming damage is permanent.
Upcoming Surgeries: Inquire about keratin scaffolds as alternatives to collagen for bone or dental procedures.
Weight Loss: Be cautious about GLP-1 drugs; address root causes, not just symptoms.
Exercise: Treat government minimum guidelines as the base, not the goal—especially if you lack access to biohacking tools.
Supplement Strategy: Consider the delivery method as critical as the supplement or drug itself.

Summary Statement

This episode emphasizes the importance of challenging long-held medical assumptions, seeking personalized and up-to-date research for your health, and not settling for the bare minimum in self-care. Dave Asprey delivers actionable scientific updates while weaving in lessons about revisiting “failed” strategies with fresh approaches and a critical eye.

Next Episode:
Tune in next Friday for another rapid-fire roundup of the latest in biohacking and health optimization.

Loading summary

Transcript2 lines

[00:01]
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. Let's go. Your body creates energy every second of every day. That process also creates wear and tear, which accelerates aging. Your mitochondria are at the center of this. They act like cellular engines. As they run, they produce oxidative exhaust in the form of free radicals. Over time, that oxidative load builds up and affects how efficiently those engines produce energy. ESS60 from MyVital C helps address this. It works like a nanoscale vacuum for your cells and helps clear out the leftover stress that builds up during normal energy production. Its structure allows it to reach the parts of your cells where energy production happens and supports steadier energy output over time. That shows up as better recovery, a sharper brain, and more energy throughout your day. It's a staple in my routine. Go to myvitalc.com/a V E S F A V to get the special offer and save up to $212 on your first order. A biotech company called Phenonet just got FDA clearance to start a phase three trial for an inhaled version of cromolyn sodium, a drug that's been used safely for Asthma since the 1970s. What makes this one different is that it's not limited to people carrying the APOE4 gene, which is normally the gatekeeping criteria for Alzheimer's drugs. This trial includes carriers and non carriers both, and they're stratifying the data by genotype to see who actually benefits. We've spent a decade watching amyloid clearing drugs like Leukembi get approved with marginal benefits and real safety concerns, mostly because they only work on a narrow slice of patients carrying a specific gene. Phenonet is taking a decades old, dirt cheap, extremely well understood molecule and asking a smarter does inflammation and microglial cleanup matter more than we've been told? I've argued for years that neuroinflammation drives cognitive decline as much as plaque does, and this trial design is basically betting on that same idea. Doctors have historically told non APOE4 carriers there's not much on offer for them. This is a signal that might change if Alzheimer's runs in your family. Get your APOE 4 status tested now so you know exactly which trials and treatments will apply to you when they land. Next up, researchers at the University of Zurich just found a group of cells they're calling regenerative astrocytes and what they do is genuinely wild. Astrocytes are the support cells that feed your neurons and keep brain tissue healthy. And the old assumption was that once you lose a bunch of them to injury or disease, the adult brain can't really replace them. Turns out that's wrong. These regenerative astrocytes gather around the edge of damaged tissue, divide, and then send the new nuclei from their daughter cells traveling across long distances through their own extensions through to repopulate the injury site and knit the whole network back together. The working assumption in neurology has been that adult brain damage is mostly permanent. You manage it, you don't reverse it. This says the brain already has a repair system built in. The researchers also mapped out the genes and signaling pathways that switch on during this process, which means there's now a target list for anyone trying to figure out how to boost this repair mechanism on purpose. And instead of waiting for the brain to do it on its own timeline, if you're dealing with any kind of brain injury or recovery, don't let anyone tell you the damage is simply permanent. Push for the most current research on regenerative therapies before you accept that as the final word. Another fun story here. The folks at King's College London took keratin, the protein extracted from sheep's wool, and turned it into a scaffold material for bone regeneration. They tested it against collagen, which has been the gold standard in bone and dental repair for decades. First on human bone cells in the lab and then in rats with skull defects large enough that they wouldn't heal naturally. Collagen still produced more total bone volume, but the bone grown with the keratin scaffold was more organized, more structurally sound, and closer to what natural, healthy bone actually looks like. This distinction is one to keep in mind. Because collagen is soft, it degrades fast, and it's never held up well for weight bearing bone, which is a real limitation if you're talking about any serious repair. Keratin held its structure during healing and integrated cleanly with the surrounding tissue, which are the two things you actually need for a scaffold to work in a real patient, not just a lab dish. And there's a sustainability angle as well. Wool is a waste byproduct of the farming industry that gets thrown out at scale. And collagen extraction is expensive and complicated by comparison. So you've got a material that's cheaper to source, better for the planet, and produces a structurally superior result. This is great news if you're facing any kind of bone graft, dental implant or craniofacial repair in the coming years. Ask your surgeon whether keratin based scaffolds have entered clinical trials yet, because this has real potential to replace collagen as the default for story 4 a company called Structure Therapeutics published phase 2B data on an oral GLP1 pill called Alina Glipron, and at the highest dose, people lost over 12% of their body weight in 36 weeks, with 16% showing up in the open label extension. That puts it in the same range as what people get from Wegovy and Ozempic, except it's a pill instead of a weekly injection. Longevity aside, I've stayed skeptical of certain uses of injectable GLP1s because of muscle loss and rebound weight gain the moment people stop. But I can't ignore that an oral option changes the compliance equation completely. Needles are a real barrier for a lot of people, and a pill that doesn't plateau after 36 weeks is worth watching closely. My concern hasn't moved, though, for part of this GLP conversation. None of these drugs address why people gained the weight in the first place, whether that's insulin resistance, mitochondrial dysfunction, or food engineered to be addictive. A pill is easier to take, but it's still a patch on a problem that has a greater cause. What if you could make your brain Sharper in just 10 to 15 minutes a day? Focus comes down to how well your mitochondria are working, because that's how your brain makes energy. When your mitochondria slow down, you get brain fog, fatigue, and low motivation. Light changes how that system behaves. Scientists have been studying near infrared light for years because of how it interacts with mitochondria and supports energy production in your brain. And that's why I've been using Neuronic. It's a wearable light therapy device for your head that uses near infrared light to support clarity, focus and overall brain performance at home without adding another complicated routine. It is simple to use, easy to stick with, and fits into your day in just a few minutes. If you're ready to ditch brain fog or you just want better mental performance, this is a straightforward tool to add. Go to Neuronic online and use code Dave for $100 off a lot of looking good is about biology. Your hair, your skin, just how you look. It's all a reflection of what's happening inside your body, and you can influence that directly. Red light therapy is one of the most powerful ways to do it. The right wavelength of light reactivates mitochondria in your cells, it wakes up dormant hair follicles and it accelerates your collagen production. And it works at the source. Irestore has been building clinical grade devices for this for over two decades. The iRestore Elite uses 300 lasers and 200 LEDs to stimulate hair regrowth across your entire scalp. People start seeing thicker, healthier hair in about three months. The Illumina face mask has 360 medical grade LEDs and provides red, infrared and blue light skin simultaneously red and infrared for collagen, anti aging and blood flow and blue to control bacteria and acne and pore size 10 minutes a few times a week and it just works. You can get both the Elite and the Illumina as a bundle right now at a big discount and I use both as part of my longevity protocol. Irestore is so confident in their products that they offer a 12 month money back guarantee. That's a huge deal, but I don't think you'll want to give it back after you see the results. Go to irestore.com, use code Dave for major savings. Again, it's irestore.com Dave. This one is for those of us who are exercise complacent and just want to know the minimal effective dose. A study out of Maau Polytechnic University tracked over 17,000 people from the UK Biobank and found that the standard device of 150 minutes of exercise a week only lowers cardiovascular risk by about 8 or 9%. To get real protection over 30% risk reduction, you need somewhere between 560 and 610 minutes a week. That's three to four times the official guideline. Only 12% of people in the study hit that number. This is exactly what I mean when I say public health guidelines are calibrated to be the bare minimum that keeps the average sedentary person from falling apart, not the amount that optimizes your health. Regulators built the 150 minute number as a floor, not a target. Now I know I've spoken on my show about how I normally do 15 to 20 minutes of exercise a week, but that's because I have a lot of fancy biohacking gear at my disposal. If you don't have that and are exercising the old fashioned way and want real cardiovascular protection, you're probably looking at closer to an hour a day and that number drops slightly if your baseline fitness is already high. Individual times aside, remember the government is not your health daddy, so stop treating the government exercise minimum as your goal. Treat it as your floor and build toward closer to 60 minutes a day, especially if heart disease runs in your family. We'll finish with this one. New research is finally clarifying something that's been controversial since the 1970s, when Linus Pauling claimed high dose vitamin C helped cancer patients and follow up studies using oral vitamin C found nothing. Turns out pollen had the mechanism right and the delivery method wrong. Oral vitamin C caps out around 200 micromoles per liter in your blood because your gut regulates how much gets absorbed. IV vitamin C skips that limit entirely and can push plasma levels up to 100 times higher. At those concentrations it starts generating hydrogen peroxide and that peroxide turns out to be selectively toxic to cancer cells because they carry less catalase to break it down than healthy cells do. A 2024 University of Iowa study found IV vitamin C plus chemotherapy doubled overall survival in advanced pancreatic cancer patients. This is one of the most satisfying vindications I've seen in a while. I've talked about IV vitamin C on this show many, many times and the mainstream response always dismissed Pauling ent instead of asking why oral and IV routes might behave so differently in the body, people make that same mistake with a lot of supplements, assuming a nutrient works the same way no matter how you take it. When dose and delivery change everything. This doesn't mean go find a wellness clinic and start doing 40 gram infusions on your own. But if you or someone you love is facing a cancer diagnosis, this is a conversation worth having with an integrative oncologist. If IV vitamin C comes up during cancer treatment, don't write it off as fringe or woo woo naturopathic and ask specifically whether your doctors are pairing it with chemotherapy, not swapping it in for chemotherapy. If you only remember one thing from this episode, make it the vitamin C story. It's not the flashiest data of the week, but it's proof of something I think people get wrong constantly. We spent 50 years treating Linus Pauling as a punchline because one study used the wrong delivery method and an entire avenue of cancer treatment got shelved as a result. That should bother you. Underneath the vitamin C details, this is really a story about how easily good ideas get killed by one bad experiment and a media cycle that never bothers to go back and check. Think about how often you've done the same thing in your own life. You try something once, it doesn't work and you file it away as doesn't work forever. When the actual problem was how you tried it, not whether it was worth trying. A diet that failed because you did it wrong, a supplement you wrote off because you took it at the wrong dose or the wrong time, a relationship approach, a business idea, a workout style all shelved permanently because of one flawed attempt nobody ever revisited. The lesson from Pauling isn't about vitamin C at all. It's to go back and check the things you already gave up on because you might be sitting on your own 50 year old mistake. I'll see you next time. Alright 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.
[13:58]
B
Foreign. 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.