A person may slur their speech, speak in a more nasal voice, or find it difficult to move eyes side-to-side, for instance.
When the nervous system becomes compromised by low B12 levels, it is because the body isn’t producing enough myelin.
The protective substance is used to transmit signals along nerves, so without it, they become vulnerable to damage.
This sets the stage for peripheral neuropathy, a condition characterised by worsening burning and tingling sensations in the body’s extremities, where the nerves are more sensitive to sensory stimulation.
READ MORE: Spinal cord of boy, 13, ‘seriously damaged’ by severe B12 deficiency