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Teng B, Li J, Ren P
If you are taking a supplement to fight oxidative stress but are also dealing with high stress, poor diet, and environmental toxins, the supplement will be working overtime
Olasupo Odunsi, MD, Medical Director Reviewed July 5, 2026 If you're constantly tired and your metabolism feels stuck, low B12 could be part of the problem
However, the conclusions that can be drawn from the included studies are significantly limited given small sample size, limited follow-up time, and a lack of control groups
Sepesi B, Ye Y, Mitchell KG, Zhang L, Gu J, Ji L, Antonoff MB , Hofstetter WL, Rice DC, Mehran RJ, Walsh GL, Vaporciyan AA, Swisher SG, Roth JA, Wu X
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