Still feeling exhausted even after a full night's sleep? It might not be burnout, it could be a Vitamin B12 deficiency. Vitamin B12 is essential for your body's natural Feeling tired all the time? It might not just be life., Low vitamin B12 can leave you feeling exhausted, foggy, weak or run down, and many people dont realise theyre deficient., In this video, our B12 Deficiency and Fatigue: Role of Vitamin Testing Who Needs Vitamin B12 Shots And Why? Why Do I Feel Worse After My B12 Injection Last year I got a diagnosis I'd never even heard of before: pernicious anemia. It explained the exhaustion, brain fog, and why am I this tired? days. Now it's monthly B12 injections