Uploaded March 2026 | Updated September 2026, 2 weeks ago
For extra details and all the references, see this letter: staycuriousmetabolism.substack.com/p/fiber-is-good-for-you-is-lazy-science?r=40ekz2
Winnow Microplastic Binding Probiotic: winnowlabs.com/STAYCURIOUS
Use Discount Code “StayCurious” for 15% Off
Microplastics and Heart Health, Letter staycuriousmetabolism.substack.com/p/microplastics-in-my-heart-its-worse?r=40ekz2
Description:
Fiber gets treated like one simple “good for gut health” nutrient… but that’s a massive oversimplification.
In this video, I break down a high-resolution Stanford human crossover trial comparing two “soluble fibers” that produced radically different outcomes: arabinoxylan vs inulin. Same category label, completely different biology.
You’ll see why dose matters, why host response matters, and how “fiber is good” or “fiber is bad” is so oversimplified these statements are effectively full-blown misinformation.
For extra nuance, references, and commentary from the senior author, check out the Stay Curious Metabolism newsletter linked above
Chapters
0:00 – Fiber Isn’t “Just Healthy” (This Paper Changed My Mind, Again)
1:46 – The 5-Chapter Roadmap (And the Nuance Everyone Misses)
3:15 – The Stanford RCT: AX vs Inulin (Randomized Crossover Trial)
4:52 – What AX and Inulin Actually Are (Same Label, Different Biology)
6:33 – High-Dose Inulin: Liver Stress + Inflammation in Some People
7:54 – The Real Lesson: Fiber Type + Dose + Your Biology (Host Response)
10:19 – AX Drops LDL (Inulin Doesn’t… and Can Even Raise It)
13:17 – Wild Finding: Protein Intake May Boost AX’s Cholesterol Effect
14:57 – What To Do for Gut Health Today (Practical Takeaways)
17:16 – Microplastics, the Gut, and Why I Use This Probiotic
18:58 – Final Punchline: Fiber Isn’t One Thing (Context Over Labels)
#Fiber #GutHealth #Microbiome #NutritionScience #Cholesterol #LDL #ApoB #Inulin #MetabolicHealth #Stanford #LiverHealth #Inflammation #PrecisionNutrition #HealthPodcast #StayCurious
For extra details and all the references, see this letter: staycuriousmetabolism.substack.com/p/fiber-is-good-for-you-is-lazy-science?r=40ekz2
Winnow Microplastic Binding Probiotic: winnowlabs.com/STAYCURIOUS
Use Discount Code “StayCurious” for 15% Off
Microplastics and Heart Health, Letter staycuriousmetabolism.substack.com/p/microplastics-in-my-heart-its-worse?r=40ekz2
Description:
Fiber gets treated like one simple “good for gut health” nutrient… but that’s a massive oversimplification.
In this video, I break down a high-resolution Stanford human crossover trial comparing two “soluble fibers” that produced radically different outcomes: arabinoxylan vs inulin. Same category label, completely different biology.
You’ll see why dose matters, why host response matters, and how “fiber is good” or “fiber is bad” is so oversimplified these statements are effectively full-blown misinformation.
For extra nuance, references, and commentary from the senior author, check out the Stay Curious Metabolism newsletter linked above
Chapters
0:00 – Fiber Isn’t “Just Healthy” (This Paper Changed My Mind, Again)
1:46 – The 5-Chapter Roadmap (And the Nuance Everyone Misses)
3:15 – The Stanford RCT: AX vs Inulin (Randomized Crossover Trial)
4:52 – What AX and Inulin Actually Are (Same Label, Different Biology)
6:33 – High-Dose Inulin: Liver Stress + Inflammation in Some People
7:54 – The Real Lesson: Fiber Type + Dose + Your Biology (Host Response)
10:19 – AX Drops LDL (Inulin Doesn’t… and Can Even Raise It)
13:17 – Wild Finding: Protein Intake May Boost AX’s Cholesterol Effect
14:57 – What To Do for Gut Health Today (Practical Takeaways)
17:16 – Microplastics, the Gut, and Why I Use This Probiotic
18:58 – Final Punchline: Fiber Isn’t One Thing (Context Over Labels)
#Fiber #GutHealth #Microbiome #NutritionScience #Cholesterol #LDL #ApoB #Inulin #MetabolicHealth #Stanford #LiverHealth #Inflammation #PrecisionNutrition #HealthPodcast #StayCurious
