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REDEFINE and SURMOUNT enrolled different cohorts (including with-diabetes vs without-diabetes arms), and diabetes status alone shifts expected weight loss

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Nat Commun 16 , 5797 (2025)

Simultaneously, some cells undergo cell cycle arrest and become senescent owing to the inhibition of cyclin-dependent kinases mediated by p21 activation through the DDR pathway 11

While the copper amounts in standard GHK-Cu doses are small, prolonged daily exposure without breaks allows gradual accumulation

A drop or two per area is sufficient