factors that deplete glutathione levels in the body – Understanding Powerful Master Antioxidant Changes in levels of the
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Results can vary depending on individual health conditions and lifestyle factors

Systematic reviews of oral vitamin B12 therapy in vitamin B12 deficiency The first evidence-based analysis by the Vitamin B12 Cochrane Group in 2005 supports the efficacy of oral vitamin B12 as a curative treatment, with a dose between 1,000 and 2,000 g (1 and 2 mg) initially prescribed daily and then weekly [27]

The 2024 NICE NG239 guideline on vitamin B12 deficiency in over-16s lists the main groups who need injections: Autoimmune gastritis (pernicious anaemia)

Int J Mol Sci (2023) 24:5364

Elevated B12 levels can be a marker for liver diseases, kidney diseases, and blood diseases, including different types of leukemia (chronic myelogenous leukemia and promyelocytic leukemia)
