RT Journal Article SR Electronic T1 Homocysteine: Is it a clinically important cardiovascular risk factor? JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 729 OP 734 VO 71 IS 9 A1 Lentz, Steven R. A1 Haynes, William G. YR 2004 UL http://www.ccjm.org/content/71/9/729.abstract AB Elevated plasma homocysteine is associated with an increased risk of myocardial infarction, stroke, and venous thromboembolism. Folic acid and other B vitamins lower plasma homocysteine levels, but whether this therapy confers a clinical benefit has yet to be determined. Until we know the results of ongoing clinical trials of homocysteine-lowering therapy, testing for and treating elevated homocysteine is probably justified only in patients with known cardiovascular disease or who are at high risk.