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Report substrate and SAM concentrations alongside any IC so results can be compared with the published values
Foods that are naturally rich in vitamin B12 include meat, poultry, fish, and dairy products
Summary: Vitamin B12 supplementation does not typically keep you awake, as there is no strong evidence linking it to insomnia or sleep disturbances in most individuals
If multiple symptoms from this list feel familiar, a serum B12 test offers a straightforward path to answers
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