David Watumull Reveals the One Antioxidant That Actually Extends Lifespan
The Gabby Reece Show
Dear Media
4.8 ā¢ 954 Ratings
šļø 1 June 2026
ā±ļø 78 minutes
šļø Recording | iTunes | RSS
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Summary
You do the work. You train, you sleep, you eat well, you manage stress. And yet your joints still ache, recovery takes longer, and something just feels harder than it used to.
I sit down with David Watumull, co-founder and CEO of AX3, to talk about astaxanthin, a naturally occurring antioxidant he has spent his entire career studying, one that most people have never heard of despite having more than 4,000 peer-reviewed papers and 100 human clinical trials behind it.
This is not a conversation about the latest wellness trend. It's a deep look at the science of oxidative stress, chronic inflammation, and what actually happens inside your cells when the damage accumulates faster than your body can repair it.
What we explore:
- Why astaxanthin is categorically different from vitamins C and E, and how it works at every layer of the cell without ever becoming pro-oxidant.
- How chronic inflammation starts with oxidative stress upstream, and why blocking it at the source is safer than suppressing the immune response after the fact.
- Why this ingredient was one of only five agents in a 20-year NIH-funded program to extend mammalian lifespan by over 10 percent while also showing health span benefits.
- How astaxanthin protects joints, muscles, and mitochondrial energy production, and what the data on competitive cyclists actually demonstrates.
- What to look for in a supplement, why bioavailability determines whether you absorb anything at all, and how to build astaxanthin into a foundational daily stack.
Chapters:
00:00 Intro
03:30 Why Astaxanthin Isn't Like Other Antioxidants
07:14 The Algae Origins of Astaxanthin
11:22 Salmon, the Food Chain, and Nature's Design
15:00 From Pharma Research to Supplement
18:21 The NIH Longevity Study Explained
23:15 mTOR, FOXO3, and the Aging Pathways
29:10 Safe Anti-Inflammatory for Joints and Athletes
35:15 Brain Protection and the Blood-Brain Barrier
38:02 Skin Health and Sun Damage from the Inside
45:00 Redox Balance and Liver Protection
48:35 Mitochondria, Energy, and Endurance Performance
53:00 How to Stack Astaxanthin with Other Supplements
57:10 Dosing, Bioavailability, and What Sets AX3 Apart
01:07:00 Why David Watumull Went All-In on One Ingredient
About David Watumull:
David Watumull is the co-founder and CEO of AX3, a supplement company built on more than two decades of astaxanthin research. He was introduced to the ingredient as a teenager working on algae ponds on the Big Island of Hawaii, and has spent his career advancing its science through pharmaceutical-grade manufacturing, NIH-funded longevity studies, and peer-reviewed cardiovascular research. His work sits at the intersection of rigorous science and practical supplementation, and it shows.
Connect with David Watumull:
Instagram: https://www.instagram.com/davewatumull
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This episode is sponsored by:
AX3: Visit ax3.life and use code GABBY for 20% OFF your first order
Website: https://www.ax3.life
Instagram: https://www.instagram.com/ax3.life
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The Gabby Reece Show
This is where I have real conversations with the people I find most worth listening to: scientists, athletes, coaches, parents, and thinkers who are doing the hard work of building a life that holds up over time. No hacks. No quick fixes. Just honest, practical conversations about performance, longevity, relationships, and what it actually takes to show up well at every age.
If you are here, you probably already know that health is not a destination. It is how you live. I am glad you are along for it.
Connect with Gabby Reece:
Instagram: https://www.instagram.com/gabbyreece/
TikTok: https://www.tiktok.com/@gabbyreeceofficial
Website: https://gabriellereece.com
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Transcript
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| 0:00.0 | Azazanthan is this extremely potent, like thousands of times stronger than vitamin C in terms of like the singlet oxygen quenching, |
| 0:06.8 | stronger than vitamin E and K-Q10 and beta-carotene and virtually all the other antioxidants that have been tested in these models. |
| 0:12.3 | Endurance athletes looking at competitive cyclists, they were looking at placebo versus a group treated with Azazanthin cycling to exhaustion. |
| 0:20.1 | And the group with the Azazanthin went like 18% longer, which was a meaningful amount. |
| 0:25.1 | It was like an hour in 12 minutes versus an hour and 25 minutes. |
| 0:27.9 | And so for a competitive cyclist to go that much when you're already highly trained, |
| 0:31.2 | that's a big difference. |
| 0:32.2 | That is a big difference. |
| 0:37.1 | You are in an interesting position that you can really educate people about something that |
| 0:43.2 | it's not that it's commonplace, but if you hear about antioxidants, I think people, that's been |
| 0:48.1 | a 20 year, maybe more, right? 20 year conversation. And I think people, it's not that they go, |
| 0:53.6 | what does that mean? What's oxidative |
| 0:55.0 | stress and things like that? And you have created a company called AX3. I have been taking the |
| 1:02.6 | product for several weeks now. And I think what I get from that is it's sort of a different idea. |
| 1:08.3 | It's that even if you're doing the right things, like I'm trying to do |
| 1:11.6 | the right things, I'm trying to work out, which also creates stress on the body, go to bed, |
| 1:17.8 | eat, beyond the sunshine, all the things, that there are other things that are happening in our |
| 1:24.9 | lives that are really driving, whether it's aging, not being able to |
| 1:29.7 | recover inflammation, and then performance. And there's an ingredient in AX3 called astazanthan. |
| 1:40.3 | And I've actually been familiar with this for probably 15, 20 years. I was joking I wore this shirt, like, in honor of Astazanthan, |
| 1:48.8 | because that's kind of one of, like, how strong of a color it is. |
| 1:52.4 | So I was really excited to share with you, like, what's the difference? |
... |
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