If you've been feeling run down lately you could be deficient in Vitamin B12. Physical symptoms of B12 deficiency include mouth ulcers, fatigue, digestive issues and muscle aches. There are also neurological B12 Injection: Uses, How to Take It & Side Effects Tua Sade Pernicious Anaemia: When Your Body Can't Absorb Vitamin B12 Properly Vitamin B12 Deficiency Vitamin B12 deficiency happens when the body does not have enough vitamin B12. Vitamin B12 is important for making healthy red blood cells and keeping nerves Are You Experiencing B12 Deficiency? Vitamin B12 is essential for maintaining overall health, yet many individuals remain unaware of its critical role in the body. A deficiency in this vitamin can lead