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B12 supports red blood cell production and neurological function, while the MIC ingredients assist in fat breakdown, liver detoxification, and metabolic regulation

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To overcome this constraint, CNS-directed strategies often employ receptor-mediated transcytosis through engineered formats such as bispecific antibodies or brain-shuttle constructs targeting BBB receptors (e.g., TfR or insulin receptor) together with pathological targets such as A or tau, thereby improving brain delivery compared with conventional antibodies (Terstappen et al., 2021)

As covered in the previous section, homocysteine rises when B12, folate, or B6 is low

Instead of asking 'why not stack them,' the question becomes 'what specific outcome justifies adding a second compound with incomplete human safety data?' For research exploring maximal metabolic intervention where single-agent tirzepatide has plateaued, the stack may be defensible