do b12 injections cause headaches Shots in Friso, Sherman, Anna. and Sunnyvale, TX Vitamin B12 deficiency: Causes, symptoms,

More research is needed to conclude if supplementing with this vitamin can improve memory in those without a deficiency

The consequences extend beyond simple fatigue: B12 deficiency can trigger mood disturbances, cognitive decline, nerve damage, and compromised immune function

5 Additionally, patients often develop tolerance to analgesics, necessitating prolonged high-dose therapies and combination regimens

A deficiency can also cause issues such as diarrhea, nausea, vomiting, lack of appetite, weight loss, pale skin, numbness and tingling in your hands and feet, confusion, irritability, depression, and behavior changes