# The “Missing Peptides” Behind AFib: Humanin + MOTS-c and the Fibrosis Switch

Page: https://stenobird.com/podcast/the-energy-code-2136601/the-missing-peptides-behind-afib-humanin-mots-c-and-the-fibrosis-switch
Text version: https://stenobird.com/podcast/the-energy-code-2136601/the-missing-peptides-behind-afib-humanin-mots-c-and-the-fibrosis-switch.md
Podcast: [The Energy Code](https://stenobird.com/podcast/the-energy-code-2136601)
Published: 2026-06-02T22:57:26+00:00
Episode link: https://theenergycode.podbean.com/e/the-missing-peptides-behind-afib-humanin-mots-c-and-the-fibrosis-switch/
Audio file: https://mcdn.podbean.com/mf/web/y3bqpt8678e9mdrj/Afib2_mixdown.mp3
Processing state: not_requested
JSON: https://stenobird.com/v1/public/podcasts/the-energy-code-2136601/episodes/the-missing-peptides-behind-afib-humanin-mots-c-and-the-fibrosis-switch
Duration seconds: 878

## Resource

Atrial fibrillation is typically treated like an electrical glitch — rate control, rhythm control, anticoagulation. But this Deep Dive explores a newer frame: AFib may be driven by metabolic collapse and fibrotic remodeling rooted in mitochondrial dysfunction. Dr. Mike breaks down a May 5 Biomedicines paper titled “Humanin and MOTS-c attenuate atrial fibrillation by suppressing fibrosis and mitochondrial dysfunction,” highlighting why mitochondrial-derived peptides (MDPs) — Humanin and MOTS-c — may function as stress-responsive guardians that help preserve mitochondrial integrity, reduce oxidative stress, and blunt fibrosis. You’ll hear the key human tissue findings (both peptides downregulated in AFib atrial appendages), the biomarker signal (plasma MOTS-c inversely tracking NT-proBNP), the “Humanin paradox” (plasma up while atrial tissue down), and the mouse data showing peptide treatment reduced AFib inducibility and structural remodeling. The episode closes with a big question: if heart health is about fueling cellular engines, not just fixing wiring, how does that reshape aging medicine? (Educational content only, not medical advice.) - Article Discussed in Episode: Humanin and MOTS-c Attenuate Atrial Fibrillation by Suppressing Fibrosis and Mitochondrial Dysfunction - Key Quotes From Dr. Mike: “For decades, the medical establishment has approached AFib as an electrical failure…The true culprit may not be the wiring, but rather the power plants.” “In patients with atrial fibrillation, these protective peptides essentially vanish... The more severe the peptide depletion, the more advanced the structural damage appeared to be.” “Our study identifies down regulation of Humanin and MOTS-c as a novel feature of human afib that correlates with fibrosis... As Humanin and…

## Actions

- request_transcript: `POST https://stenobird.com/v1/public/podcasts/the-energy-code-2136601/episodes/the-missing-peptides-behind-afib-humanin-mots-c-and-the-fibrosis-switch/transcription-requests` — Idempotently request low-priority transcript generation for this episode.
- read_markdown: `GET https://stenobird.com/podcast/the-energy-code-2136601/the-missing-peptides-behind-afib-humanin-mots-c-and-the-fibrosis-switch.md` — Read the agent-friendly Markdown representation of this episode resource.

A page view does not enqueue transcription. Agents should invoke `request_transcript` explicitly when they need this episode processed.

## Transcript

Full transcripts are not published on public pages unless there is a clear rights basis.