A 2003 study by Khavinson's team lengthened telomeres in human cells, and in 2025 an independent group at Brunel University London reported dose-dependent telomere extension in normal human cells
Bradley, Effects of oral glutathione supplementation on systemic oxidative stress biomarkers in human volunteers
An RCT that investigated the effect of 6 g/d PUFA supplementation during 4 months on patients with migraine, found that omega-3 fatty acids did not have any significant influence on mean duration and intensity of the migraine attacks, and rescue medication use
Likewise, dietary supplementation with GSH improves the growth, anti-oxidative capacity, disease resistance and gut morphology in juvenile Atlantic salmon [33], common carp [47], triploid rainbow trout [48], shrimp [49], and crabs [50]