Awareness of the Effect of Vitamin B12 Deficiency on the Nervous System Among the General Population in Taif, Saudi Arabia.

Background: Vitamin B12 is important for the health of the nervous system, its deficiency leads to various neurological manifestations such as visual problems, ataxia, peripheral neuropathy, dementia, etc. The deficiency can be caused by malnutrition, malabsorption, or increased demand. Early detection is important for the control and prevention of complications.