Can taking 5000 mcg daily of vitamin B12 cause cancer?

Answered by 1 Apollo Doctors

Dr Yusuf Mohammad

General Practitioner

MBBS
Advanced Certificate Course in Dermatology
8+ Yrs

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No, it doesnt cause cancer but elevated levels can put you at a risk of cancer

Dr. Yusuf Suggests...

Take a ANTI ds-DNA - FEIA Test or Take a APOLIPOPROTEIN EVALUATION PANEL WITH LIPOPROTEIN A Test

Book ANTI ds-DNA - FEIA Test Book APOLIPOPROTEIN EVALUATION PANEL WITH LIPOPROTEIN A Test

Answered 24/07/2025

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I recently did a blood test for WBC, hemoglobin, thyroid, and calcium. My results are: WBC count: 10,400 Vitamin B12: 250 Hemoglobin: 15.1 Other values were normal. I showed the report to two doctors, but I still feel confused. Are these reports normal, or is something wrong? Please help

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I recently had a hemogram test. My results show: Packed Cell Volume (PCV): 33.5 percent (low) Hemoglobin: 11.6 g/dL RBC count: 3.90 million/microL Are these values concerning, and should I consult a doctor? Please advise as soon as possible. Thank you

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Are vitamin B12 injections painful?

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Disclaimer: Answers on Apollo 247 are not intended to replace your doctor advice. Always seek help of a professional doctor in case of an medical emergency or ailment.