Follistatin: Muscle Biology Beyond the Headline
AXON Research Institute • AXON Peptide affiliation
Educational draft • Scientific + legal review pending
Silent film with full on-screen captions. Conceptual illustrations, not molecular structures.

Muscle growth is regulated by many signals. Follistatin is a protein that can bind members of that signaling network, including myostatin and activins. Researchers have explored this biology in muscle disease. One early human study delivered a follistatin gene to six people with Becker muscular dystrophy. Some participants improved on a walking test, but the study was small and lacked a randomized placebo comparison. It cannot establish a general muscle-building treatment. Gene delivery also differs fundamentally from a vial sold as follistatin. In regulated sport, myostatin-binding proteins such as follistatin are prohibited. Product claims need much more than a shared name.

END CARD
Research explained. Not medical advice. Sources and limitations in the accompanying transcript.

SOURCES
[1] Mendell et al.: Phase 1/2a follistatin gene therapy trial for Becker muscular dystrophy
https://pmc.ncbi.nlm.nih.gov/articles/PMC4426808/
Primary early human clinical trial

[2] WADA 2026 Prohibited List
https://www.wada-ama.org/sites/default/files/2025-09/2026list_en_final_clean_september_2025.pdf
Official sport rules

EVIDENCE LIMITATIONS
Gene therapy, native proteins, different isoforms, and commercial products are not interchangeable.
No randomized comparison; six participants cannot exclude uncommon harms.
Do not generalize a muscular-dystrophy study to healthy athletes.

TOPIC INVENTORY PROVENANCE (not reused audiovisual media)
https://www.facebook.com/reel/2623630304754873/