391 GLP-1 and GLP-1 analogs exert their effects on food intake and body weight through a myriad of neural substrates, encompassing several hypothalamic nuclei (including the arcuate nucleus of the hypothalamus, periventricular hypothalamus, and lateral hypothalamic area), hindbrain nuclei (such as the parabrachial nucleus and medial nucleus tractus solitarius), the ventral subregion of the hippocampus (vHP), and nuclei embedded within the mesolimbic reward circuitry (including the ventral tegmental area, VTA, and nucleus accumbens, NAc)
GHK-Cu can signal remodeling, but if inflammation is high (KPVs target), blood flow is poor (BPC-157s target), or repair cells cannot migrate (TB-500s target), the remodeling signal has nothing to act on
GHK-Cu itself generally doesn't increase sun sensitivity and may even offer some protection
Higher melanin levels can reduce vitamin D production, while vitamin D deficiency can also disrupt melanocyte function