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Nonetheless, a meta-analysis of the Chinese population concluded that patients diagnosed with MS and relapsing MS had lower serum B12 levels than controls, whereas remitting patients did not exhibit this difference [131]
This means most of a high-dose supplement remains in the gastrointestinal tract, though the direct link to digestive symptoms is not well established
This procedure should always be done under the supervision of a trained nurse or doctor
References Zheng Y, Ma AG, Zheng MC, Wang QZ, Liang H, Han XX, Schouten EG
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