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Vitamin B12 deficiency, if left untreated, can lead to neurological problems

Cyanocobalamin is a synthetic form of B12 often used in supplements because it's cheaper

45 A longer-term placebo-controlled study found that vitamin B12 deficiency absolute risk was 11.2% greater in the group treated with metformin and the number needed to harm was 8.9 per 4.3 years
What Causes a Hangover

Cell Stem Cell 28 , 17581774.e8 (2021)

Did drinking peppermint tea improve attention or memory in a recent study
