Summary: Copper peptides, particularly GHK-Cu, are topical ingredients proposed to support hair growth by stimulating follicle activity and improving scalp vascularity, though they are not MHRA-licensed for hair loss and the clinical evidence remains limited
Spaggiari G, Granata ARM, Santi D
Because the testing involves sophisticated methods like mass spectrometry, it can take slightly longer than a basic metabolic panel or a complete blood count
For sarcopenia and age-related muscle dysfunction, GLP-1 RAs preserve muscle health through prevention of catabolic muscle protein breakdown, enhanced insulin and amino acid-stimulated muscle protein synthesis through improved mTOR pathway activation, reduced skeletal muscle inflammation and fibrosis, and enhanced mitochondrial biogenesis improving muscle metabolic efficiency [169,170,171,172]