MOTS-c
Also known as: Mitochondrial ORF of the 12S rRNA Type-c
A naturally occurring peptide encoded by mitochondrial DNA. It plays a role in metabolic regulation and has been called an 'exercise mimetic' because it activates some of the same pathways as physical activity. Still mostly in the research phase.
How it works
MOTS-c works through the AMPK pathway, which is the same energy-sensing system activated by exercise. It improves how your cells use glucose, boosts mitochondrial function, and helps regulate fat metabolism. Your natural MOTS-c levels drop significantly as you age.
Common uses
- Metabolic health and insulin sensitivity
- Exercise performance support
- Anti-aging and longevity research
- Obesity and diabetes research
Side effects
- Very limited human safety data
- Mild injection site reactions (reported anecdotally)
- Possible temporary changes in energy levels
- Long-term effects unknown
Key research
- 2015 Cell Metabolism study showed MOTS-c reduces obesity and insulin resistance in mice fed high-fat diets
- 2025 research found MOTS-c reduces pancreatic islet cell aging, potentially delaying diabetes onset
- Studies show MOTS-c levels are lower in people with type 2 diabetes, gestational diabetes, and obesity
- Human trials are now being registered to evaluate safety and efficacy for frailty, insulin resistance, and performance
Safety notes
- Not FDA-approved for any medical use
- Was placed on FDA Category 2 restricted list but expected to return to Category 1 per 2026 reclassification
- Most evidence comes from animal and cell studies. Human clinical data is still very limited
- Banned by WADA for athletic competition
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