Where results are borderline, measurement of methylmalonic acid (MMA) or holotranscobalamin (active B12) may help clarify the picture, as recommended in NICE CKS guidance on B12 and folate deficiency anaemia
If you are B12 deficient, you may feel fatigued, weak, and depressed
It might be more than just a hectic schedule you could be dealing with a vitamin B12 deficiency
The combination is close to additive but falls slightly short of the arithmetic sum, which still establishes that glucagon drives chronotropy via a parallel pathway rather than through GLP-1R cross-reactivity
Cyanocobalamin can be a prescription medication or an over-the-counter supplement, and is used to treat a variety of issues, including: Vitamin B12 Deficiency Pernicious Anemia, a condition where an autoimmune attack destroys the protein necessary for vitamin B12 absorption