In cells, FRs can modify the molecular structures of proteins and lipids, alter enzyme homeostasis, and cause structural damage to nuclear and mitochondrial DNA and various cellular organelles, contributing to the development of functional or gene expression abnormalities
Depending on the model, researchers may assess changes in molecular markers (e.g., gene expression or pathway readouts) to better understand how short peptides can influence age-related cellular processes
As a peptide that stimulates the bodys natural production of growth hormone, sermorelin is often prescribed in anti-aging
If you have severe deficiency, B12 injections might be more appropriate as they have nearly 100% absorption rate
However, I had seen several great reviews on VITAstir and their products
Vitamin B 12 levels in children and adolescents on plant-based diets: a systematic review and meta-analysis