An Update on Glutathione's Biosynthesis, Metabolism, Functions, and Medicinal Purposes.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing mechanistic literature without systematic search methodology or original data
PubMed 37921175 · doi:10.2174/0109298673251025230919105818
What was done
The authors synthesized literature retrieved from PubMed, Scopus, ScienceDirect, and Google Scholar concerning glutathione biosynthesis, metabolism, physiological functions, medicinal uses, and nutritional strategies to maintain normal body pools.
What was found
The abstract reports no numerical findings or effect sizes. It describes qualitative mechanistic functions of glutathione, including inactivating reactive oxygen, nitrogen, and sulfur species, detoxifying xenobiotics, protecting protein thiols from oxidation and crosslinking, regulating the cell cycle, supporting immune function, and serving as a cysteine reservoir and health biomarker.
Why it matters
This review outlines the fundamental biochemical roles of glutathione and summarizes conceptual rationales for its use in disease prevention and nutritional maintenance.
Limits
The abstract provides no quantitative data, sample sizes, or study counts. Because it is a narrative review rather than a systematic review or empirical study, it lacks predefined inclusion protocols, quality appraisal of cited literature, and direct clinical efficacy testing.