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doi:10.1002/mas.21479

As an amino acid, glycine supports digestion, promotes collagen production, aids sleep quality, and helps stabilize blood sugar

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References 208 and 209 identify a stress response that is induced by accumulation of mitochondrial precursor proteins in the cytosol

Understanding these risk factors can help you determine if your fatigue might be linked to low B12 levels

Here are some of the major causes of B12 deficiencies
