Here is why we do not use those sources, and why you should not either
[Google Scholar] 13.Lin CP, Chang KV, Huang YK, Wu WT, zakar L
Syst Rev
There are specific clinical reasons behind this combination
Furthermore, these low-resolution techniques were used long before the scientific community fully accepted the concept of biologically active proteins lacking a fixed 3D structure, and were instrumental in laying the groundwork for this vital discovery, played a crucial role in the discovery of the protein intrinsic disorder phenomenon and, later, offered tremendous help with establishing the IDP/IDR field
This shows that peptides are most effective when part of a long-term plan, ideally supported by lifestyle changes