Homocysteine and vascular disease

Area of Science:

• Cardiovascular Science
• Vascular Biology
• Public Health

Background:

• Moderately raised total homocysteine (tHcy) concentrations have been associated with increased atherothrombotic vascular events for over two decades.
• Recent evidence suggests this association may be causal, supported by consistency, strength, dose-dependency, and biological plausibility.
• However, definitive proof requires further investigation.

Purpose of the Study:

• To evaluate the causal link between elevated total homocysteine (tHcy) and atherothrombotic vascular disease.
• To assess the potential benefits of lowering tHcy on vascular risk.
• To highlight the need for standardized tHcy measurement and further research.

Main Methods:

• Review of existing studies associating tHcy levels with vascular events.
• Emphasis on the need for systematic reviews and randomized controlled trials (RCTs).
• Discussion on the importance of standardizing tHcy measurement techniques.

Main Results:

• A consistent, strong, and dose-related association between elevated tHcy and atherothrombotic vascular events.
• Biological plausibility supports a potential causal relationship.
• Evidence suggests lowering tHcy could reduce vascular disease, but requires confirmation.

Conclusions:

• Further research, including systematic reviews and RCTs, is crucial to establish causality.
• Standardization of tHcy measurement is essential for reliable risk assessment.
• If causality is confirmed, tHcy measurement, multivitamin therapy, and folic acid fortification could significantly impact public health strategies for vascular disease prevention.