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New Carlisle, IN
A 18-year-old female asked:

can high b12 be a bad thing?

2 doctor answers5 doctors weighed in
Dr. Michael Dugan
Specializes in Hematology
B12 is water: Soluble. Excess should be excreted in the urine. No known effects of high levels.
Dr. Randy Baker
Holistic Medicine 40 years experience
Needs evaluation: B12 is not toxic so high B12 due to taking it is not bad. If someone has high B12 without taking it then it can be a sign of serious problems including liver ; kidney disease, myelproliferative disorders including leukemia ; polycythemia vera ; hypereosinophilic syndrome. High B12 does not cause these but caused by them. Further tests are needed to find the underlying cause: http://bit.Ly/1hvpcy7.

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Similar questions

New Carlisle, IN
A 18-year-old female asked:

What are symptoms of high b12?

1 doctor answer1 doctor weighed in
Dr. Michael Dugan
Specializes in Hematology
B12 is water: Soluble. Excess should be excreted in the urine. No known effects of high levels.
San Ramon, CA
A 38-year-old female asked:

What does it mean when the MCV is high and B12 is also high? What could this be?

1 doctor answer1 doctor weighed in
Dr. Stephen Southard
Internal Medicine 15 years experience
Many things: I wouldn't worry so much about the high B12 level, as that isn't so much a cause of the a high MCV, in fact the opposite is true(low B12 levels cause high MCV). But a high MCV, means your red blood cells are large. This can be related to many things, from a higher number of immature red blood cells, underactive thyroid, too much alcohol, liver disease, low folic acid just to name a few.

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Last updated Jan 27, 2021
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