The #1 Poop Secret For Reversing Aging & Boosting Immunity! l Dr. Grace Liu l Ep #428

🔹 About This Episode:

Is your gut the missing key to longevity? In this episode, I sit down with Dr. Grace Liu to explore how your microbiome acts as a powerful “longevity organ” influencing your immune system, brain health, inflammation, and aging. We break down how modern lifestyles damage gut diversity—and what that means for your overall health.

We also dive into FMT, peptides and bioregulators, resistant starch, and the truth about probiotics and fiber. If you want simple, science-backed ways to rebuild your gut and improve your healthspan, this episode is packed with actionable insights.

🔹 What you will learn:

→ Why your gut is the most overlooked “longevity organ” and how it directly impacts aging, immunity, and brain health
→ The truth about FMT, probiotics, and fiber—and what actually works to rebuild a resilient microbiome
→ How peptides, diet, and microbial diversity can repair your gut and unlock better energy, mood, and long-term health

🔹 What We Discuss:

Introduction to host … 00:00:00
Dr. Grace Liu on the gut as a hallmark of aging … 00:04:06
Peptides, FMT, and evidence for gut-driven regeneration … 00:05:04
FMT safety, immune education, and the environmental “microdosing” effect … 00:07:07
Links between gut aging, the immune system, and mental health … 00:08:13
Diet, ancestry, and resistant starch for butyrate production … 00:15:01
Ancestral diet, microbiome differences, and pitfalls of shortcuts … 00:18:53
Fiber, polyphenols, and the key longevity bacteria … 00:24:09
Gut markers, loss of diversity, and ABC species signature … 00:25:15
Risks of overhyped probiotics, strep, and broad interventions … 00:36:29
Peptides, bioregulators, and repairing the gut … 01:12:01
Practical longevity: movement, daily habits & where to learn more … 01:22:46

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🔹 Learn More From Dr. Grace Liu below:

• Website: https://thegutinstitute.com/

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🔹 Thank You To Our Sponsors For Making This Episode Possible:

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🔹 Find more from Nathalie:

• Join Nat’s Membership Community: https://www.natniddam.com/the-longevity-community
• Sign up for Nats Newsletter: https://landing.mailerlite.com/webfor…
• Instagram: https://www.instagram.com/nathalieniddam/
• Website: https://www.natniddam.com
• Dr. Bill Lawrence Episode: https://www.youtube.com/watch?v=jr2rcC1lNyM

#TheLongevityPodcast #GutHealth #Microbiome #Longevity #Biohacking #Peptides #FMT #DigestiveHealth #AntiAging #FunctionalMedicine #HealthOptimization