vision changes, or other concerning symptoms deserve medical evaluation. Neurological symptoms associated with B12 deficiency can become more difficult to reverse if deficiency remains untreated for a prolonged period.
Conclusion
Vitamin B12 deficiency can affect the nervous system, blood cells, mouth, digestive system, and, in more serious cases, vision. Symptoms such as numbness or tingling, unusual fatigue, tongue inflammation, balance problems, or changes in vision can have many possible causes, so they should not be used to diagnose a deficiency on their own.
If you suspect that your vitamin B12 level may be low, consult a healthcare professional about appropriate testing and treatment. Identifying the underlying cause is important because dietary insufficiency and problems with absorption may require different approaches.
