what is enhanced glutathione IV Therapy: You Need to Know 9 Health Benefits of Glutathione
Description
Women taking oral contraceptives may have decreased serum B 12 levels in the absence of clinical deficiency (due to decreases in the B 12 carrier protein, haptocorrin)
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Archives of Physiology and Biochemistry
10.1016/j.molmet.2021.101165 116 RobertiA.TejedorJ

Tuna Another popular, nutrient-rich fish is tuna, which can also add lots of B12 to your diet
