flat lay photo of alternative medicines

Vitamin B12: What to Know

Vitamin B12, also known as cobalamin, is an essential nutrient that our bodies need but cannot produce on their own. It plays a pivotal role in many of our body’s core functions. Understanding its significance, sources, and potential deficiency risks is crucial for maintaining optimal health. Here’s a comprehensive guide.

Benefits of Vitamin B12

  1. DNA Synthesis: Vitamin B12 is fundamental for producing DNA in our cells, a process vital for overall health.
  2. Neurological Function: B12 helps in the maintenance of nerve cells and supports normal neurological function, thereby preventing conditions like neuropathy.
  3. Red Blood Cell Formation: A B12 deficiency can lead to a decrease in red blood cell formation, possibly resulting in a type of anemia known as megaloblastic anemia.
  4. Energy Production: It aids in transforming the food we eat into energy by playing a role in the metabolism of every cell in the human body.

Dietary Sources

  1. Animal Products: Meat, especially liver and kidney, fish, eggs, and dairy are rich sources of B12.
  2. Fortified Foods: Plant-based milk alternatives, cereals, and vegan products often have added B12.
  3. Dietary Supplements: B12 supplements are available in pill form, sprays, and even patches.

Signs of B12 Deficiency

  1. Fatigue and Weakness: As B12 plays a role in energy production, a deficiency can lead to feeling constantly tired.
  2. Anemia: A notable drop in red blood cell formation.
  3. Neurological Symptoms: Numbness, tingling, balance issues, and memory disturbances can be related to B12 deficiency.
  4. Mood Changes: Deficiencies have been linked to mood disorders like depression and dementia.

What to Do if You Suspect a Deficiency If you believe you might have a B12 deficiency, it’s crucial to consult with a healthcare professional. They might prescribe B12 injections or high-dose oral supplements.

Conclusion Whether you’re following a vegan diet, are pregnant, or are aging, understanding your Vitamin B12 needs is essential. By being aware and proactive, you can ensure that your body receives this crucial nutrient, thus supporting your overall well-being.

Note: The above content is informational. Always consult a medical professional for health-related advice.


  1. National Institutes of Health. Dietary Supplement Fact Sheet: Vitamin B12
  2. PubMed Central. Vitamin B12 and its role in the brain
  3. Mayo Clinic. Vitamin deficiency anemia
  4. Harvard Health. Vitamin B12 deficiency can be sneaky, harmful
  5. MedlinePlus. Vitamin B12
  6. Vegan Society. B12: A Vegan Nutrition Primer
  7. WebMD. Vitamin B12 Supplements
  8. PubMed Central. Clinical manifestations of vitamin B12 deficiency
  9. American Family Physician. Vitamin B12 Deficiency: Recognition and Management
  10. Medical News Today. What are the symptoms of vitamin B-12 deficiency?
  11. PubMed. Vitamin B12, cognition, and brain MRI measures
  12. NHS. Vitamin B12 or folate deficiency anemia