The cumulative impact is to make things more confusing to average consumers, who in this case just want to be their best selves and need clear guidance on what works in an arena filled with lots of anecdotes but not a lot of science
Current investigations additionally evaluate signaling pathways involving nitric oxide synthase (NOS) , vascular endothelial growth factor (VEGF) , fibroblast growth factors (FGFs) , transforming growth factor-beta (TGF-) , actin-binding proteins, extracellular matrix proteins, and intracellular regulatory molecules associated with peptide-mediated communication
[DOI] [PubMed] [Google Scholar] 211.Featherstone R.E., Kapur S., Fletcher P.J
Dosage by Goal: Anti-Aging, Fat Loss, Muscle Growth, Sleep The same peptide serves different purposes depending on dose, timing, and combination strategy
They provide building blocks for keratin, the protein that gives hair structure