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[9] High-dose niacin (used to treat cholesterol) lacks human safety data in pregnancy and could theoretically affect the fetus (for example, by causing hypotension or altering lipid metabolism)

If a vitamin B12 deficiency is not detected and treated, it could affect your nervous system

For vitamin B12 pills, most people take these daily in doses recommended by their doc but taking 1,000 mcg daily is pretty standard

Post-hoc comparisons showed that the Firmicutes phylums relative abundance was significantly higher in WD control mice compared to mice in the vehicle- and 5A-1MQ-treated groups switched from WD to LD (Fig

Additionally, other factors such as having had gastric bypass surgery or taking antacids long-term can lead to deficiency