Vitamin B12 is a nutrient that helps keep the body's nerve and blood cells healthy and helps make DNA, the genetic material in all cells. Vitamin B12 also helps prevent a type of anemia called megaloblastic anemia that makes people tired and weak.

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Many people are deficient in vitamin B12 but do not realise. Some key triggers of B12 deficiency include; tiredness, depressive symptoms, hair loss, pins & needles or numbness in hands and feet.