Hyperhomocysteinemia is a medical condition characterized by an abnormally large level of
homocysteine in the
blood.As a consequence of the biochemical reactions in which homocysteine is involved, deficiencies of the vitamins
folic acid,
pyridoxine (B6), or
B12 can lead to high homocysteine levels. Supplementation with pyridoxine, folic acid, B12 or
trimethylglycine (betaine) reduces the concentration of homocysteine in the bloodstream.
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An excess of homocyteine in the bloodstream.