MOTS-c

Overview

MOTS-c is a 16-amino-acid peptide encoded within mitochondrial DNA (the 12S rRNA region), making it unusual among signaling peptides. In preclinical models it activates AMPK and influences glucose handling, insulin sensitivity, and fat metabolism, and because exercise sharply raises endogenous MOTS-c it is often marketed as an 'exercise mimetic.' The human evidence is early and inconsistent: most data are from cells and mice, and observational human findings on circulating MOTS-c and metabolic health are mixed and context-dependent. It is not FDA-approved, and claims of fat loss, performance, or longevity benefit in humans are unproven. It is a true peptide.

Commonly Reported Uses

These are uses commonly discussed or marketed by users and vendors — not a list of proven or approved benefits, and not a recommendation.

• Metabolic / insulin-sensitivity support (marketed claim; mostly animal data, mixed human associations)
• Endurance and exercise-performance enhancement ('exercise mimetic' marketing claim; not demonstrated in controlled human trials)
• Fat loss and body-composition change (marketed claim; preclinical data, unproven in humans)

What to Track

Data points you and your clinician might monitor. For observation only — not a diagnostic protocol.

• Labs — fasting glucose, HbA1c, and fasting insulin/HOMA-IR if a clinician is monitoring insulin sensitivity
• Smart scale — weight and body-fat % trend
• WHOOP — recovery score, HRV, and sleep-stage trends over a 30-day baseline
• InBody/DEXA — skeletal muscle mass vs. fat mass
• Subjective — daily energy and perceived exertion/recovery check-ins

Sources & References

1. [1]The mitochondrial-derived peptide MOTS-c is a regulator of plasma metabolites and enhances insulin sensitivity — PMC
2. [2]MOTS-c: A promising mitochondrial-derived peptide for therapeutic exploitation — PMC
3. [3]MOTS-c is an exercise-induced mitochondrial-encoded regulator of age-dependent physical decline — Nature Communications