Homocysteine

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Homocysteine

Homocysteine is an amino acid normally found in small amounts in the blood. Although the exact relationship is unclear, high levels of homocysteine in the blood are thought to promote plaque buildup in blood vessels that may, over time, lead to serious cardiovascular disease such as stroke, heart attack, pulmonary embolism, and deep vein thrombosis.

People who have a strong personal or family history of heart disease but who do not have other risk factors that can be controlled, such as smoking or high blood pressure, may benefit from having a blood test to determine their homocysteine levels. This information can help a health professional determine a person's overall risk for heart disease.

Studies are currently being done to determine the effect of B vitamin supplements on homocysteine levels. But recent studies have shown that folic acid and B vitamin supplements may not lower the risk of heart disease or stroke. The American Heart Association recommends a healthy, balanced diet to provide the recommended dietary amounts of folic acid and B vitamins.

Credits

Author	Jeannette Curtis
Author	Caroline Rea, RN, BS, MS
Editor	Kathleen M. Ariss, MS
Editor	Susan Van Houten, RN, BSN, MBA
Associate Editor	Tracy Landauer
Associate Editor	Pat Truman
Primary Medical Reviewer	Patrice Burgess, MD - Family Medicine
Primary Medical Reviewer	Adam Husney, MD - Family Medicine
Primary Medical Reviewer	Kathleen Romito, MD - Family Medicine
Last Updated	May 25, 2007

Last updated:	May 25, 2007
Author:	Caroline Rea, RN, BS, MS
Reviewed By:	Kathleen Romito, MD - Family Medicine
Editors:	Susan Van Houten, RN, BSN, MBA, Pat Truman

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