glutathione and superoxide dismutase Concerted action of antioxidant enzymes dismutase, catalase, Figure 1 from Comparing glutathione

Confounding Variable A factor that is related to both the treatment and the outcome, which can distort the apparent effect if not accounted for

Unfortunately, this approach leaves people feeling as fatigued and frustrated as before, with no insight into what is going on and no treatment or the wrong treatment (such as an anti-depressant)

However, the peptide characteristics that enable absorption through the gastric mucosa, including its stability in acidic environments and resistance to enzymatic degradation, suggest it should maintain activity when absorbed through nasal mucosa as well

Chronic Administration of the Metastin/Kisspeptin Analog KISS1-305 or the Investigational Agent TAK-448 Suppresses Hypothalamic Pituitary Gonadal Function and Depletes Plasma Testosterone in Adult Male Rats

however, this does not necessarily mean exercise can be replaced by MOTS-c supplementation