According to Oregon State University, one of the neurological symptoms of vitamin B12 deficiency includes numbness and tingling in the hands and more commonly the feet, which the health body warns can be difficult to reverse.
“Although the progression of neurological complications is generally gradual, such symptoms may not be reversible with vitamin B12 deficiency treatment, especially if they have been present for a long time.” .
Other neurological symptoms include difficulty walking, memory loss, disorientation, and dementia.
