There have been any number of medications on the market billed to help you lose weight, but there hasnt been anything as powerful and tailored as the GLP-1 medications, commonly called semaglutide
The gist of the "collagen in topical skincare" subject is to know that collagen in a jar has nothing to do with wrinkles but everything to do with skin hydration

Abbreviations AA: amino acid AD: Alzheimer's disease ATG: autophagy-related gene CDCrel-1: cell division control-related protein CMA: chaperone-mediated autophagy CP: core particle E1: ubiquitin-activating enzyme E2: ubiquitin-conjugating enzyme E3: ubiquitin-ligating enzyme GstS1: glutathione S-transferase S1 GABARAP: g-aminobutyric acid receptor-associated protein HSP 90: heat shock protein 90 KO: knock out LC: locus coeruleus LC3: microtubule-associated protein 1 light chain 3 Pael-R: parkin-associated endothelial-like receptor PD: Parkinson's disease PROTAC: proteolysis targeting chimera Sfp1: split-finger protein 1 SnPc: substantia nigra pars compacta Ub: ubiquitin UCH-L1: carboxyl-terminal hydrolase L1 UPS: ubiquitinproteasome system References Wijeyekoon RS, Moore SF, Farrell K, Breen DP, Barker RA, Williams-Gray CH (2020) Cerebrospinal Fluid Cytokines and Neurodegeneration-Associated Proteins in Parkinson's Disease

GLP-1 agonists directly bind to and activate GLP-1 receptors on pancreatic cells, while berberine works primarily through AMPK activation and does not directly interact with GLP-1 receptors
The result is that unphosphorylated -catenin is accumulated and then translocates to the nucleus, where it interacts with T cell-specific factor (TCF)/the lymphoid enhancer factor (LEF) family and recruits co-activators, including CBP/p300 and Bcl-9, thereby activating the expression of WNT target genes such as c-Myc, cyclin D1, and CDKN1A