5 doctors weighed in:

Is it possible for someone to have high hemoglobin and also a vitamin B12 deficiency?

5 doctors weighed in
Dr. Scott Bolhack
Wound care
2 doctors agree

In brief: B12 Deficiency

There are several things that happen with a B12 deficiency including anemia, neuropathies, and non-soecific neurological affects such as fatigue, depression, irritability, and psychosis.
You ask an excellent question. Through research, i could not find any whether the neurological symptoms could occur before the anemia. Clinically, patients are diagnosed with B12 deficiency through anemia first.

In brief: B12 Deficiency

There are several things that happen with a B12 deficiency including anemia, neuropathies, and non-soecific neurological affects such as fatigue, depression, irritability, and psychosis.
You ask an excellent question. Through research, i could not find any whether the neurological symptoms could occur before the anemia. Clinically, patients are diagnosed with B12 deficiency through anemia first.
Dr. Scott Bolhack
Dr. Scott Bolhack
Thank
Dr. Jason Burke
Anesthesiology
1 doctor agrees

In brief: It is possible

B12 deficiency generally leads to low hemoglobin levels.
But, if a person lives at a high altitude (over 6500 feet, ) they could have a high hemoglobin level if the B12 deficiency is mild. There are also other diseases that cause a high hemoglobin level, such as polycythemia vera.

In brief: It is possible

B12 deficiency generally leads to low hemoglobin levels.
But, if a person lives at a high altitude (over 6500 feet, ) they could have a high hemoglobin level if the B12 deficiency is mild. There are also other diseases that cause a high hemoglobin level, such as polycythemia vera.
Dr. Jason Burke
Dr. Jason Burke
Thank
1 comment
Dr. Liawaty Ho
high hemoglobin can also be caused by other condition such as sleep apnea, liver /kidney cyst and causing secondary polycythemia and vit B12 deficiency can still develop as a separate entity to the elevation of hemoglobin. and as Dr. Burke pointed- in polycythemia vera- hb can be elevated and vit B12 can still be deficient due to other mechanism and as a separate condition.
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