They can also recommend important diet and lifestyle changes
also known as myostatin) and activin A (ActA) are the two major ligands mediating the muscle-minimization actions of ActRIIA/B receptors 22,26,27,28,29,30
A study published in the Proceedings of the National Academy of Sciences found that aging is associated with a 47% decrease in the catalytic subunit (GCLC) and a 52% decrease in the modulatory subunit (GCLM) of glutamate-cysteine ligase, the rate-limiting enzyme for glutathione production
Additionally, the same study reported a decrease in cigarette smoking among participants who were smokers, suggesting potential cross-substance benefits of GLP-1RAs in this population (Hendershot et al., 2025)
The Genetics of Alcohol Metabolism: Role of Alcohol Dehydrogenase and Aldehyde Dehydrogenase Variants. Alcohol Research & Health, vol
Mild to moderate laxity looks like softness, crepiness, and loss of firmness