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However, breastfeeding and pregnant women need about 2.8 mcg and 2.6 mcg, respectively

Ashwood P, Anthony A, Pellicer AA, Torrente F, Walker-Smith JA, Wakefield AJ: Intestinal lymphocyte populations in children with regressive autism: evidence for extensive mucosal immunopathology

Due to its structure being similar to hGH in some parts, it should not be used for long-term or excessive use without monitoring

Is it true we can actually absorb some B12 from our own microbiome
