A mechanism is a beginning.
Why a convincing signaling pathway still needs clinical testing.
A proposed mechanism explains how an effect could occur. Clinical evidence tests whether a particular intervention actually produces meaningful benefits with acceptable harms in a defined population.
MOTS-c experiments connect cellular metabolism with findings in mice. Copper-GHK fibroblast experiments measure laboratory signals. Early CJC-1295 trials measure hormone concentrations. These are useful observations at different stages of research.
Translation can fail because concentrations, routes, metabolism, disease states, and tissue environments differ. Keep an observed pathway attached to the experimental conditions that produced it.
Look for replication, appropriate comparison groups, meaningful endpoints, and sufficient follow-up. Treat uncertainty as information to preserve rather than a gap to fill with confident marketing.