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B12 is a water-soluble vitamin with a key role in the normal functioning of the brain and nervous system, and for the formation of blood
However, the lack of extensive studies and FDA approval for weight loss specifically may deter some patients
FIGURE 1 The studies included in the qualitative synthesis (Table 2) (Tanaka et al., 1981
Within 48 hours after injection of 100 or 1000 mcg of vitamin B 12, 50 to 98% of the injected dose may appear in the urine
Genetics is a guide, not a guarantee
The speed at which B12 functions depends on proper gut health management because stomach issues can reduce its effectiveness
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