Other Symptoms of B12 Deficiency Besides headaches, a B12 deficiency can cause: Fatigue and weakness Dizziness or lightheadedness Tingling or numbness in hands and feet (peripheral neuropathy) Memory problems or confusion Mood changes (depression, irritability) Pale or yellowish skin Vision disturbances If you experience these symptoms along with frequent headaches, consult a doctor for a blood test
accessed November 25, 2020
If you have low vitamin B12 levels or deficiency, consult with your doctor about whether B12 shots are good for you or not
Reviewed by the PeptideMind Team Updated July 5, 2026 Free Peptide Dosage Calculator Enter vial size, bacteriostatic water volume, and target research quantity to calculate the exact draw volume in milliliters
Johnstone DL, Al-Shekaili HH, Tarailo-Graovac M, Wolf NI, Ivy AS, Demarest S, et al