B12 absorption issues
B12 absorption issues
Vitamin B12 supports neurological health, energy metabolism, DNA synthesis, and red blood cell formation, but vitamin B12 deficiency can develop gradually and cause fatigue, cognitive changes, tingling, numbness, and anemia symptoms. Risk increases with a plant-based diet lacking reliable vegan B12 sources, older age, metformin or acid-suppressing medication use, gastrointestinal disorders, and impaired intrinsic factor. B12 absorption issues may occur even with adequate dietary intake, making testing important. Serum B12, methylmalonic acid, homocysteine, and complete blood counts can clarify status. B12 supplements may help address dietary gaps or absorption challenges when selected and monitored with professional guidance.