A 33-year-old member asked:
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Does vitamin B12 deficiency cause brain and nerve problems?

1 doctor answer
Dr. Carla Enriquez
49 years experience in Pediatrics
Yes: In the early 19th century, scientists noted weakness and numbness with B12 deficiency. Recently, B12 has been shown to upregulate neurotrophic factors (chemicals [cytokines] that help nerve cells grow) & downregulate neurotoxic factors (chemicals that break down nerve cells). In other words, B12 helps nerve cells grow and prevents their destruction by naturally occurring brain chemicals.
Answered on Aug 27, 2019
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