Glutathione injections are, in fact, risk-free
Physically active individuals often generate increased oxidative stress through repetitive muscle contraction, tissue microtrauma, and elevated metabolic demand
An MTHFR variant does not directly measure current SAM, SAH, methylation capacity, oxidative stress, glutathione status or mitochondrial function
Cells 9(8):1823 Zelenak C, Eberhard M, Jilani K, Qadri SM, Macek B, Lang F (2012) Protein kinase CK1 regulates erythrocyte survival
In fact, reactive oxygen species (ROS) and peroxides (H2O2) upregulate the transsulfuration pathway (homocysteine towards cysteine and eventually the GSH-Px system) and downregulate the transmethylation (homocysteine towards methionine) (Figure 3)