Blood tests, like serum B12 levels and complete blood counts, are key to making these decisions
As a cofactor, cobalamins are essential for two cellular reactions: the mitochondrial methylmalonyl-CoA mutase conversion of methylmalonic acid (MMA) to succinate, which links lipid and carbohydrate metabolism, and the activation of methionine synthase, which is the rate-limiting step in the synthesis of methionine from homocysteine and 5-methyltetrahydrofolate
Blood markers may change before nerve symptoms improve, and long-standing neurologic symptoms may take longer to assess
These support skin structure, hydration, and resilience
Zinc supports metallothionein, a cysteine-rich protein involved in intracellular metal regulation and antioxidant protection
(PubMed) Rimm EB, Stampfer MJ, Ascherio A, Giovannucci E, Colditz GA, Willett WC