Vitamin B12 Deficiency: Signs & Symptoms Vitamin B12 is essential for nerve health, red blood cell formation, and brain function. When B12 levels are low, symptoms often develop slowly and silently, Vitamin B12 deficiency symptoms: Taste buds that 'stretch out' a warning sign of low level Express.co.uk If you've been feeling weak, foggy, or experiencing numbness in your hands and feet, it could be a sign of vitamin B12 deficiency. B12 is essential for nerve function and red blood Gastric Banding Vitamin B12 Injection: Dosage, Signs & Monitoring Bolt Pharmacy Vitamin B12 deficiency symptoms: Metallic taste in your mouth can mean you're lacking B12 Express.co.uk