Stress, not-so-great food choices, and being around environmental nasties can lower our glutathione levels
specifically the PKGI isoforms) and the phosphorylation of various protein substrates
People with active or suspected cancer: Despite GHK-Cus anti-cancer potential, it theoretically could promote the formation of new blood vessels, which can feed tumors.3 9 14 People with anxiety or mood disorders: Similarly, although GHK-Cu has demonstrated an anxiolytic and anti-aggression effect in rats, the present research is too meager to support it as a viable treatment for anxiety or mood disorders
Levels decline naturally with age, and that decline is tied to fatigue, cognitive decline, muscle loss, neurodegeneration, and metabolic disease
Humans express two tryptophan hydroxylase genes identified as TPH1 and TPH2
The absence of clinical guidelines leaves surgeons navigating an evidence gap with potential medicolegal implications, particularly when patients undergo elective procedures where the acceptable tolerance for unmeasured risk is low