Can glutathione impact mitochondrial health?
Mitochondria is a cellular organelle often referred to the "powerhouse" of the cell, regulating a range of functions from energy generation, metabolism and cell survival. Enhancing mitochondrial function is the wellspring of efforts to optimize physical fitness and longevity at the cellular level. Glutathione plays an important role in the theory of aging that cumulative oxidative stress in mitochondria may determine lifespan. Glutathione stabilizes the inner mitochondrial membrane, squelches reactive oxygen species (ROS) generated by mitochondrial respiration, and maintains mitochondrial DNA fidelity to profoundly influence mitochondrial function and cell survival.10
What is the role of glutathione in the aging process?
Glutathione levels are believed to rapidly decline after the age of 45. The body has to contend with increased oxidative stress, weakening immune, and more DNA repair demands as we age. Randomized clinical studies in rodents and older adults indicate that glutathione acts in concert with the independent actions to two key precursors, glycine and and cysteine, to improve an array of biomarkers associated with the hallmarks of aging. Biomarkers for endothelial function, insulin sensitivity, intracellular signaling, maintaining DNA integrity , inflammation, metabolic flexibility, mitophagy (recycling old and damaged mitochondria) and cellular senescence (also called "zombie cells" as these cells have lost proper function, harm nearby cells and do not die off) are all improved. To expound further on the previous question, most of these biomarkers are modulated by glutathione and its precursors at the mitochondrial level. These improved biomarkers correspond with endpoints such as improved gait and body composition.11,12