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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]

Glutathione helps the liver process these substances, making them water-soluble so they can be safely eliminated from the body

While this can be due to several factors, including magnesium deficiency, several studies highlight the important influence of glutathione (GSH) levels on vitamin D status and activity

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