🧠 Vitamin B12 Deficiency: The Silent Energy Killer? 💉 Brain fog, fatigue, numbness, mood changes, or tingling hands and feet? You might be low on vitamin B12—and not even know it. In this video, we cover how to test, what results mean, and how to treat B12 deficiency effectively. 🔍 What you’ll learn: • Who should get a B12 blood test • What’s a normal, borderline, or low B12 level? • Signs & symptoms of B12 deficiency • Causes: Poor diet, pernicious anemia, metformin, PPIs, vegan diet, gut is