Most cases involve some combination of both components
GHK-Cu for women: clinical evidence shows 70% collagen improvement & hair growth versus minoxidil
Levels of free radical species in healthy tissues exert important intracellular signal transduction and regulatory functions in folliculogenesis, maturation of oocytes, dissolution of corpora luteal, implantation, and embryo development ( Reactive oxygen species in vivo The predominant ROS species are O, hydrogen peroxide (H 2 O 2 ), and, hydroxyl radical ( OH) ( Superoxide anion Approximately, 15% of molecular oxygen is converted into O by mitochondrial complexes during normal respiration ( is a highly reactive radical that does significant intracellular damage
With regard to your point on tiredness, yes was definitely wiped out after initial eod b12 jabs but no longer thankfully
Vegetarians and Vegans : B12 is found almost exclusively in animal products, increasing the risk for those on strict plant-based diets without supplementation