Can vitamin B12 deficiency cause anemia?

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Deficiency of vitamin B12 may cause a type of anemia in which you have too few red blood cells and the cells are larger than normal, making them less able to carry oxygen throughout your body. As a result, if you are deficient in vitamin B12, you may feel weak, lightheaded and short of breath. You may also develop tingling or pain in your fingers and toes, muscle weakness and trouble walking.

A standard blood test called a CBC (complete blood count) can detect vitamin B12 deficiency. Injections of vitamin B12 may help to reverse it. Talk to your doctor if you think you may be at risk for vitamin B12 deficiency.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.