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Curcumin has been demonstrated to inhibit the activation of both NF-B and STAT3, thereby disrupting key processes in cancer development and progression

Quick Answer: Yes, there is a blood test for glutathione levels, typically measuring "Total Glutathione" or "Reduced Glutathione" (GSH)

doi: 10.1038/s41467-018-03157-4 [DOI] [PMC free article] [PubMed] [Google Scholar] 71.Vallieres E, Tumelty K, Tunney MM, et al
Vitamin C is essential for the production of collagen and the maintenance of healthy skin

It has been found to aid in the shielding of the digestive tract and reducing inflammation, which is a common symptom of many gastrointestinal disorders
