[8] The age-related decline and its implications The decline of circulating GHK from 200 ng/mL at age 20 to 80 ng/mL by age 60 correlates with reduced wound healing capacity, thinner skin, decreased collagen density, and slower tissue repair
The amount of research in this area has increased greatly in recent years
The treatment normalized serum corticosterone levels, enhanced central GABA and serotonin concentrations and reduced peripheral inflammation and gut microbiota profiling revealed a reduction in potentially pathogenic genera ( Acinetobacter, Enterococcus, Bacillus ) and increased abundance of beneficial taxa ( Muribaculum, Alistipes, Lactobacillus ), indicating the therapeutic potential of targeted psychobiotic intervention for stress-related disorders (Tyagi et al., 2025)
Scientific World J
Drink a six pack, and it will take six hours to get sober
IGF-1 signaling also plays a role in maintaining BBB integrity by promoting the expression of tight junction proteins and inhibiting the breakdown of the extracellular matrix (Freese et al., 2017)
