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MOTS-c for Weight Loss: What the Evidence Shows

What human and animal studies show about MOTS-c for weight loss, how strong that evidence is, and what is still unproven.

Medically reviewed by Juan Pablo Frías, MD · · DisclosureMitochondrial-derived peptideUpdated
Strongest evidence
Human RCT
Human studies
12
PubMed records, our ledger
Animal studies
13
PubMed records, our ledger
Studies we summarised
4
with an outcome for weight loss

Evidence for weight loss

Each row is an outcome related to weight loss from a published study, strongest design first. Animal and cell results are labelled and are not human results. User reports are not counted as evidence here.

MOTS-c for weight loss: outcomes in published studies
OutcomeResultStudy typeSource
MOTS-c and body composition (association)Post-exercise MOTS-c levels were associated with lower fat mass, body weight, HOMA-IR and CRP and higher lean mass in non-Hispanic White survivors (association, not a treatment effect).Human RCTn = 49Scientific reports 2021, PMID 34413391
Serum MOTS-c in obesitySerum MOTS-c was 14.33 pg/mL with obesity versus 13.67 pg/mL at normal BMI, not significantly different.Human observationaln = 85Archives of endocrinology and metabolism 2025, PMID 41004666
Ovariectomy-induced obesityMOTS-c prevented ovariectomy-induced obesity and insulin resistance in mice.Animal · mouse (not a human result)Journal of molecular medicine 2019, PMID 30725119
Obesity and insulin resistanceMOTS-c treatment prevented age-dependent and high-fat-diet-induced insulin resistance and diet-induced obesity in mice.Animal · mouse (not a human result)Cell metabolism 2015, PMID 25738459

PubMed records for MOTS-c and weight loss: 12 human, 13 animal (search counts, not studies we reviewed). Grades follow our evidence scale.

How strong is it?

Strongest evidence:Human RCT evidence, 4 of 4Scientific reports 2021, PMID 34413391

A human randomized trial outweighs any number of animal studies. Animal and cell results show a mechanism worth testing, not that it works in people.

Other peptides people research for weight loss

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Common questions

Does MOTS-c help with weight loss?

The strongest study we summarise for weight loss is human rct evidence, across 4 studies with an outcome for weight loss. A trial result is not an approval; see the legal status.

Is MOTS-c approved for weight loss?

No. MOTS-c is not FDA approved for any use, including weight loss.

What is the best peptide for weight loss?

There is no single answer. Our weight loss overview compares each candidate by evidence grade and legal status rather than by popularity.

More on MOTS-c

DosageDoses used in published studies, with the source for each.CalculatorVial, water and dose to syringe units.Side effectsWhat labels and studies report, and what is unknown.ResultsStudy outcomes and when they were measured.PricePrice per mg and per week from dated listings. No vendor links.Legal statusFDA, compounding and WADA status with dates.

Sources

  1. 1Effect of aerobic and resistance exercise on the mitochondrial peptide MOTS-c in Hispanic and Non-Hispanic White breast cancer survivors.Scientific reports · 2021PMID 34413391Accessed 2 Oct 2026
  2. 2MOTS-C levels ın ındividuals with and without obesity and ıts association with ınflammation, insulin resistance and endothelial dysfunction.Archives of endocrinology and metabolism · 2025PMID 41004666Accessed 2 Oct 2026
  3. 3MOTS-c peptide regulates adipose homeostasis to prevent ovariectomy-induced metabolic dysfunction.Journal of molecular medicine (Berlin, Germany) · 2019PMID 30725119Accessed 2 Oct 2026
  4. 4The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance.Cell metabolism · 2015PMID 25738459Accessed 2 Oct 2026

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