💊 What Is Vitamin B12?
Vitamin B12 (cobalamin) is a water-soluble vitamin that’s essential for nerve function, red blood cell formation, and DNA synthesis. Your body can’t produce it, so you need to get it from food or supplement
🧠 Why B12 Is Important
Supports brain and nervous system health
Helps make red blood cells
Prevents megaloblastic anemia
Supports energy metabolism
Affects mood and memory
⚠️ Symptoms of B12 Deficiency
Fatigue or weakness
Brain fog or memory issues
Tingling or numbness in hands/feet
Pale or yellowish skin
Glossitis (swollen tongue)
Mood changes or depression
Severe, untreated deficiency can lead to permanent nerve damage.
💉 Forms of B12
Cyanocobalamin Synthetic, commonly used in supplements
Methylcobalamin Natural, active form—better for nerve support
Hydroxocobalamin Often used in injections (longer lasting)
Adenosylcobalamin Supports mitochondrial energy production
💊 Who Should Take B12 Supplements?
Vegans or vegetarians
People with pernicious anemia
Older adults (absorption decreases with age)
Those with digestive disorders (e.g., Crohn’s, celiac)
People on long-term acid blockers or metformin
📌 Dosage Guide (General)
Daily needs: 2.4 mcg for adults
Common supplement range: 250–1000 mcg (high doses are safe—excess is excreted)
Injections: Often prescribed
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