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Free Radic Biol Med 68:2234 Seet RC, Lee CYJ, Lim EC, Quek AM, Huang H, Huang SH, Halliwell B (2011) Oral zinc supplementation does not improve oxidative stress or vascular function in patients with type 2 diabetes with normal zinc levels

Of note, this would not be a concern with most peoples normal dietary vitamin C intake, which is usually sufficient

Part Fibre Toxicol 13 , 4 (2015)

Stanniocalcin 2 (STC2) can interact with and activate PRMT5, which catalyzes symmetric dimethylation of histone H4 on Arg 3 (H4R3me2s) to induce radioresistance by activating DNA damage repair, but inhibits ferroptosis in esophageal squamous cell carcinoma[209]