4 doctors weighed in:
What are the effects of vitamin B12 deficiency?
4 doctors weighed in

Dr. Bryan Levey
Pediatrics
3 doctors agree
In brief: Anemia is main
There are many symptoms of B12 deficiency.
The most prominent is a type of anemia where your red blood cells are decreased in number, increased in size, and decreased in color. Since they are not normal, they do not carry oxygen like they're supposed to. As B12 deficiency worsens, the anemia gets worse and you get weaker and sicker. You also have trouble with thinking and brain function, etc..

In brief: Anemia is main
There are many symptoms of B12 deficiency.
The most prominent is a type of anemia where your red blood cells are decreased in number, increased in size, and decreased in color. Since they are not normal, they do not carry oxygen like they're supposed to. As B12 deficiency worsens, the anemia gets worse and you get weaker and sicker. You also have trouble with thinking and brain function, etc..
Dr. Bryan Levey
Dr. Bryan Levey
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