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Homocyst(e)Ine, Vitamin Status, and CVD Risk

This study has been completed.
National Heart, Lung, and Blood Institute (NHLBI)
Information provided by:
University of Washington Identifier:
First received: May 25, 2000
Last updated: February 8, 2016
Last verified: June 2000
To test the hypotheses that the risk of myocardial infarction and/or stroke is associated with elevated plasma levels of homocysteine, and low plasma levels of folate, vitamins B12 and B6.

Cardiovascular Diseases
Cerebrovascular Accident
Coronary Disease
Myocardial Infarction
Heart Diseases

Study Type: Observational

Resource links provided by NLM:

Further study details as provided by University of Washington:

Study Start Date: September 1995
Estimated Study Completion Date: March 1999
Detailed Description:


Elevated plasma homocyst(e)ine is a risk factor for vascular disease in middle-aged men. Supplementation with folate, and to some extent vitamins B12 and B6, can reduce plasma homocyst(e)ine levels. There is also evidence from in vitro studies that the adverse atherogenic or thrombotic effects of Lp(a) may be greatly enhanced by homocyst(e)ine. The high prevalence of low levels of folate and vitamins B12 and B6 among the elderly in the United States has led to the hypothesis that a substantial portion of cardiovascular morbidity and mortality among older persons could be prevented by increasing intake of these nutrients to reduce plasma levels of homocysteine. Little is known, however, regarding the relationship of homocysteine, folate, B vitamins, and Lp(a) to cardiovascular disease among the elderly, among whom CVD represents the leading cause of morbidity and mortality.


In this ancillary study to the prospective Cardiovascular Health Study (CHS), a case-cohort design was used to test hypotheses that the risk of myocardial infarction and/or stoke was associated with elevated plasma levels of homocysteine, and low plasma levels of folate, vitamins B12 and B6. Further, a determination was made whether elevated plasma levels of homocysteine and Lp(a) interacted to increase substantially the risk of myocardial infarction and/or stroke above that due to either factor alone. The sub-cohort was used to study the relationship between the factors under study and progression of sub-clinical atherosclerosis. For each case and sub-cohort member, an aliquot of fasting plasma drawn at baseline was analyzed for homocysteine, folate B12, and B6 concentrations. [Values of plasma Lp(a) were determined at baseline.] Results of these assays were combined with other CHS data to address the hypothesis that the risk of myocardial infarction and/or stroke was associated with elevated plasma levels of homocysteine, and low plasma levels of folate, vitamins B12 and B6.


Ages Eligible for Study:   up to 100 Years   (Child, Adult, Senior)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No
No eligibility criteria
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No Contacts or Locations Provided
  More Information Identifier: NCT00005482     History of Changes
Other Study ID Numbers: 4969
R01HL054711 ( US NIH Grant/Contract Award Number )
Study First Received: May 25, 2000
Last Updated: February 8, 2016

Additional relevant MeSH terms:
Cardiovascular Diseases
Heart Diseases
Myocardial Infarction
Coronary Disease
Coronary Artery Disease
Pathologic Processes
Myocardial Ischemia
Vascular Diseases
Arterial Occlusive Diseases
Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Amino Acid Metabolism, Inborn Errors
Metabolism, Inborn Errors
Genetic Diseases, Inborn
Malabsorption Syndromes
Metabolic Diseases
Vitamin B Deficiency
Deficiency Diseases
Nutrition Disorders processed this record on May 24, 2017