Feeling tired and low on energy? You might need a B12 boost! Vitamin B12 helps with energy production, brain function, and red blood cell formation. A deficiency can cause fatigue, weakness, and Your body needs vitamin B12 to keep blood cells healthy and to make your nerves work right. But what happens when you run low? Here are some signs: https: wb.md 3OUOc1J Still feeling tired even after good sleep? It might be more than just stress it could be Vitamin B12 deficiency. In Part 2, Dr. Pydi Satish, Consultant General Physician, explains the signs, causes, NAD+ & B12 Injections in Crewe, Cheshire