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Homocysteine and cardiovascular disease
1Heart Associates, 8181 Fannin Street, Houston, TX 77030, USA. dineshkalra@hotmail.com
Insights
Elevated homocysteine levels are linked to atherothrombotic disease and venous thromboembolism. Lowering homocysteine through diet or supplements may benefit high-risk patients and slow atherosclerosis progression.
Area of Science:
- Cardiovascular Research
- Metabolic Health
- Thrombosis Studies
Background:
- Elevated homocysteine is strongly associated with atherothrombotic disease and venous thromboembolism.
- This association is particularly noted in coronary disease.
- Screening may be beneficial for unexplained thrombotic tendencies and young patients with premature coronary events.
Purpose of the Study:
- To review the association between homocysteine levels and cardiovascular and thrombotic diseases.
- To explore the potential benefits of lowering homocysteine in high-risk individuals.
- To discuss methods for homocysteine reduction and their impact on atherosclerosis.
Main Methods:
- Literature review of research over the past decade.
- Analysis of emerging data on hyperhomocysteinemia and cardiac disease.
- Examination of preliminary studies on homocysteine-lowering interventions.
Main Results:
- Hyperhomocysteinemia is linked to various atherothrombotic conditions.
- Lowering homocysteine, through diet or supplements (folic acid, B vitamins), may be beneficial.
- Preliminary data suggest slowing of atherosclerosis progression in coronary and carotid vessels.
Conclusions:
- While causality is not yet proven, lowering homocysteine shows promise for managing atherothrombotic disease.
- Safe and inexpensive methods exist to reduce homocysteine levels.
- Further trials are needed to confirm mortality benefits.
Abstract:
Research over the past decade has shown that elevated levels of homocysteine have a strong association with all forms of atherothrombotic disease and venous thromboembolism. This association is particularly strong for coronary disease and newer data indicate that screening for homocysteine levels may be warranted in those with unexplained thrombotic tendencies and in young patients who develop coronary events or disease without the usual predisposing factors such as hypertension, smoking, hypercholesterolemia, or diabetes. Although the link between hyperhomocysteinemia and cardiac disease has not been conclusively shown to be causal as yet, data are emerging that lowering homocysteine levels may be beneficial in patients at high risk. Such lowering can be done safely and inexpensively with increased intake of fruits and vegetables and in those patients who are particularly at high risk using supplementation with folic acid and the B vitamins. Preliminary studies have shown that lowering homocysteine levels in this manner may slow the progression of atherosclerosis in coronary and carotid vessels. No mortality data exist yet showing that reducing homocysteine reduces cardiac or total mortality, although it is likely that ongoing and planned trials that are underway will shed light on these important questions soon.
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