A 1991 study described hair follicle-stimulating properties of peptide copper complexes in C3H mice, and a 2007 study investigated AHK-Cu, a related tripeptide-copper complex, in human hair follicle models [6], 13
In rodents, FGF21-stimulated energy expenditure is mediated via sympathomimetic stimulatory effects on adipose tissue thermogenesis through direct FGF21 central action to achieve negative energy balance [37]
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In comparison, those who received the placebo lost nearly 4% of their weight