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Ideally you have been diagnosed as being B12 deficient by your doctor and have had the relevant blood tests to confirm this before beginning this treatment

Furthemore, an increased serotonin metabolism was demonstrated by diminished hypothalamic serotonin levels, lowered 5-hydroxytryptamine (5-HT)/tryptophan ratios and elevated 5-hydroxyindoleacetic acid/5-HT ratios, indicating dysregulated serotonergic system (Jia et al., 2024)

Vitamin D and the brain: key questions for future research

The association between chemosensitivity and Pgp, GST- and Topo II expression in gastric cancer
