GHRP-6, the first widely studied GHRP, was shown to stimulate robust GH release but also significantly elevated cortisol, prolactin, and appetite effects mediated through the same ghrelin receptor but via pathways not directly related to GH secretion
For instance, if hair loss appears, a provider may recommend testing your protein intake, as sufficient protein in your diet promotes healthy hair growth, or they may adjust your Retatrutide dosage
Those of us in our 40s, 50s, and 60s typically lose about 3-8% of our muscle as a natural part of aging, per decade
Clin Rheumatol 26:6468 Scudder PR, Al-Timimi D, McMurray W et al (1978) Serum copper and related variables in rheumatoid arthritis