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To put that in perspective, you'd need massive amounts of oral supplements to come close to these therapeutic doses - and most wouldn't make it to your cells intact
Berbel, M
These skip digestion for better uptake
Nutrient Deficiencies (Building Blocks Missing) Glutathione synthesis requires specific nutrients: Cysteine : From dietary protein (whey, eggs, poultry)-rate-limiting Glycine : Often deficient in modern diets (need 10-15g/day, most get 3-5g) Selenium : Cofactor for glutathione peroxidase (GPx) , the enzyme that recycles GSSG back to GSH B vitamins (B6, B9, B12): Required for methylation and sulfur metabolism Vitamin C : Recycles oxidized glutathione Deficiency in any of these impairs glutathione production or recycling [5]
Type of study: non-rct experimental Number of citations: 44 Year: 2020 Authors: Hengke Guo, Siyu Guo, Hongmei Liu Journal: Bioorganic chemistry Journal ranking: Q1 Key takeaways: Se-rich yeast peptide fraction containing selenium and bioactive peptides shows the highest antioxidant activity and effectively reduces UVB radiation-induced skin damage
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