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Factors affecting high-density lipoproteins
1National Heart, Lung, and Blood Institute, Division of Heart and Vascular Diseases, National Institutes of Health, Bethesda, Maryland, USA.
Insights
Low high-density lipoprotein (HDL) cholesterol is linked to coronary heart disease (CHD), but its causal role is unproven. Current interventions focus on lowering low-density lipoprotein cholesterol for better CHD risk management.
Area of Science:
- Cardiovascular Medicine
- Lipid Metabolism
- Preventive Cardiology
Background:
- Low high-density lipoprotein (HDL) cholesterol is a known risk factor for atherosclerotic coronary heart disease (CHD).
- The causal link between low HDL cholesterol and CHD development requires further investigation.
- HDL cholesterol levels often correlate with other modifiable CHD risk factors.
Purpose of the Study:
- To evaluate the established association between low HDL cholesterol and CHD risk.
- To assess the efficacy and safety of interventions targeting HDL cholesterol levels.
- To guide clinical recommendations for CHD prevention strategies.
Main Methods:
- Review of existing epidemiological data and clinical studies on HDL cholesterol and CHD.
- Analysis of the impact of lifestyle modifications and pharmacologic agents on HDL cholesterol.
- Assessment of the evidence for a causal relationship between HDL cholesterol levels and CHD outcomes.
Main Results:
- A strong association exists between low HDL cholesterol and increased CHD risk, but causality is not definitively established.
- Lifestyle changes can mitigate CHD risk and may influence HDL cholesterol levels.
- No specific, safe, and effective drugs are currently available for raising HDL cholesterol to prevent CHD.
Conclusions:
- Routine measurement of HDL cholesterol is recommended for cardiovascular risk assessment.
- Current evidence suggests focusing interventions on lowering low-density lipoprotein cholesterol for primary CHD prevention.
- Further research is needed to clarify the therapeutic potential of targeting HDL cholesterol.
Abstract:
Although it is well established that a low-circulating level of high-density lipoprotein (HDL) cholesterol is strongly associated with the likelihood of developing atherosclerotic coronary heart disease (CHD), the causal nature of this association has not been shown. Low levels of HDL cholesterol frequently are associated with other CHD risk factors, whose correction, often by hygienic means, may reduce CHD risk with minimal risk of adverse side-effects. However, other recommended hygienic interventions may lower HDL cholesterol levels. Specific safe and effective drugs for correcting a low HDL cholesterol level are not available and the potential value of specific pharmacologic treatment of this condition in the treatment or prevention of CHD remains unproven. Thus, while HDL measurement should be incorporated routinely in risk-assessment, intervention efforts should focus primarily on lowering low-density lipoprotein cholesterol.