Common Signs of Low Vitamin B12
8. Vision Problems
In rare cases, prolonged B12 deficiency can affect the optic nerve and contribute to visual disturbances. New or unexplained vision changes should always be evaluated by a healthcare professional rather than assumed to be caused by a vitamin deficiency.
When Should You Get Tested?
Having one or more of these symptoms does not necessarily mean you have low vitamin B12. Similar symptoms can result from iron deficiency, thyroid problems, sleep deprivation, medications, diabetes, and other conditions.
