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How does vitamin B12 help red blood cells and nerves function?
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vegetarianism
A vegan food pyramid, which excludes meat and animal products.
Vitamin B12 is essential for maintaining healthy red blood cells and nerve function through two distinct biochemical processes:
- Red Blood Cell Development: Vitamin B12 works in conjunction with folic acid to facilitate the synthesis of DNA. This process is critical for the proper production and maturation of red blood cells. A deficiency in B12 disrupts this DNA synthesis, leading to the formation of large, immature red blood cells, a condition known as megaloblastic anemia.12
- Nerve Function: The vitamin plays a separate, vital role in the synthesis of fatty acids required to maintain the myelin sheath. This protective covering surrounds nerve fibers and ensures their proper function. If this sheath degenerates due to a lack of B12, it can lead to symptoms such as numbness, tingling, and, in severe cases, paralysis.12
Because vitamin B12 is primarily found in animal-derived foods, individuals following a vegan diet must ensure they obtain the nutrient through fortified foods or supplements to prevent these serious health complications.12