"Glutathione Depletion Accelerates Cigarette Smoke-Induced Inflammation and Airspace Enlargement." Toxicol Sci
AHK-Cus direct follicular effects (DPC proliferation, VEGF upregulation) and GHK-Cus broader regenerative gene modulation (collagen synthesis, matrix remodeling, anti-inflammatory effects) address different aspects of scalp and follicle biology
Finally, the results of one randomized controlled trial in 601 patients with common forms of retinitis pigmentosa indicated that supplementation with 400 IU/day of synthetic vitamin E (equivalent to 180 mg/day of RRR --tocopherol) modestly but significantly accelerated the loss of retinal function compared to placebo (123)
l -dopa-induced reversal in striatal glutamate following partial depletion of nigrostriatal dopamine with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine
A separate 2024 meta-analysis (Alshammari et al.) confirmed the same conclusion, further strengthening the evidence base