How Does Vitamin B12 Work?

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How Does Vitamin B12 Work?

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Vitamin B12 is essential for healthy nerve and blood cells. It is also important for making DNA. In addition, vitamin B12 helps to break down homocysteine, an amino acid that can cause problems if it builds up to high levels. In particular, it is thought that high homocysteine may contribute to problems such as cardiovascular disease or blood clots.