homocysteine

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homocysteine An amino acid formed as an intermediate in the metabolism of methionine, and in the formation of cysteine from methionine; it is demethylated methionine. Does not occur in foods to any significant extent, and is not generally considered to be of nutritional importance. High blood concentrations of homocysteine (occurring as a result of poor folic acid, vitamin B6, and B12 status) have been implicated in the development of atherosclerosis, heart disease, and stroke.

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