Vitamin B12 deficiency can occasionally affect neurological pathways related to vision.
Vision changes are less common than fatigue or tingling, but the NHS lists visual problems among possible complications of B12 deficiency.
Sudden or significant changes in vision require prompt medical evaluation.
Who Is More Likely to Develop Vitamin B12 Deficiency?
Several factors can increase the likelihood of deficiency.
People following vegan or highly restrictive diets
Because naturally occurring B12 is found primarily in animal-derived foods, people who avoid these foods generally need reliable fortified foods or supplementation.
People who cannot absorb B12 properly
A person may consume adequate B12 and still become deficient.
