How Vitamin B12 Boosts Immunity | An Easy Guide To Vitamin B12 | Zooki

Sufficient Vitamin B12 intake is critical for a robust immune system, which protects against infections and promotes overall health.
A well-functioning immune system relies on a sufficient supply of red blood cells, which deliver oxygen to immune cells. Vitamin B12 plays a vital role in producing these red blood cells, as well as impacting the activity of white blood cells. Studies have demonstrated reduced lymphocyte and natural killer cell activity in patients with low B12 levels, which improved significantly upon receiving B12 supplements.
Vitamin B12 is crucial for the synthesis of DNA, RNA, and proteins, helping to maintain the normal function of immune cells such as T and B lymphocytes. It also aids in producing a molecule called S-adenosylmethionine (SAMe), essential for synthesising immunoglobulins, the antibodies that help your immune system fight pathogens.
Vitamin B12 also supports the proliferation and maturation of natural killer (NK) cells, white blood cells that identify and eliminate infected or abnormal cells. By regulating homocysteine metabolism, B12 helps maintain the integrity of the gut lining, preventing harmful substances from entering the bloodstream and provoking an immune response.
Finally, B12 is involved in producing cytokines, small proteins that facilitate communication between immune cells and modulate the body's inflammatory response.
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