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Two other surrogate markers of B12 deficiency are elevated homocysteine and MCV, although several other nutrient deficiencies can cause these levels to be elevated, so be sure to work with your provider when interpreting any lab test results

Gut Health and Digestion

Vitamin B12 is a water-soluble vitamin essential for energy metabolism, red blood cell formation, and neurological function

blood pressure regulation in hypertensive models TB-500 : Enhanced blood vessel formation

Qualitative and Quantitative Validation of the FACIT-Fatigue Scale in Iron Deficiency Anemia. Health and Quality of Life Outcomes 13 (2015): 60

Instead, they support the scalp's natural balance, which plays a role in healthy-looking hair over time