VITAMIN: B 12
Vitamin B12 (also called Cobalamin) is a water-soluble vitamin essential for many vital processes in the body. Below is an overview of its significance, sources, and health implications:
Functions:
Red Blood Cell Formation: Helps in producing healthy red blood cells and preventing anemia (especially megaloblastic anemia).
DNA Synthesis: Plays a crucial role in the synthesis of DNA during cell division.
Nervous System Health: Maintains healthy nerve cells and supports proper neurological function.
Energy Production: Aids in converting food into energy by assisting enzymes in metabolism.
Sources of Vitamin B12:
- Animal-Based Foods:
- Meat (beef, chicken)
- Fish (salmon, tuna)
- Eggs
- Dairy products (milk, cheese, yogurt)
- Fortified Foods:
- Breakfast cereals
- Plant-based milk (soy, almond, etc.)
Supplements: Available for individuals with dietary restrictions or absorption issues.
Natural Production: Small amounts are produced by gut bacteria, but not enough for human needs.
Deficiency Symptoms:
- Fatigue and weakness
- Numbness or tingling in hands and feet
- Memory issues or cognitive decline
- Pale or jaundiced skin
- Shortness of breath and dizziness
- Mood changes, including depression
Causes of Deficiency:
- Inadequate dietary intake (common in vegans and vegetarians)
- Malabsorption conditions (e.g., pernicious anemia, Crohn’s disease)
- Certain medications (e.g., proton pump inhibitors, metformin)
- Aging (reduced stomach acid production)
Daily Requirements:
Adults: 2.4 micrograms per day (slightly higher for pregnant or breastfeeding women).
Toxicity:
Vitamin B12 is water-soluble, so excess amounts are generally excreted in urine, making toxicity rare.
Treatment for Deficiency: Note: Only with Doctor's prescription.
Oral supplements
Vitamin B12 injections (for severe cases or absorption issues)