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Published on: November 10, 2017
Low-density lipoprotein cholesterol reduction: the end is more important than the means
1SUNY Downstate Medical Center, Brooklyn, New York, USA. jclarosa@downstate.edu
Insights
Lowering low-density lipoprotein (LDL) cholesterol significantly reduces coronary heart disease risk. Clinical trials show no adverse effects from maintaining low LDL cholesterol levels, supporting aggressive lipid-lowering strategies.
Area of Science:
- Cardiology
- Epidemiology
- Pharmacology
Background:
- Elevated low-density lipoprotein (LDL) cholesterol is linearly associated with increased coronary heart disease (CHD) risk.
- A 1% reduction in LDL cholesterol correlates with a 1% decrease in CHD risk.
- Statins are the most effective agents for lowering LDL cholesterol.
Purpose of the Study:
- To evaluate the safety and efficacy of achieving very low LDL cholesterol levels.
- To inform guidelines for managing high-risk patients with coronary heart disease.
Main Methods:
- Analysis of data from epidemiologic studies and clinical trials.
- Review of National Cholesterol Education Program guidelines.
- Assessment of statin efficacy and potential combination therapies.
Main Results:
- Clinical trials demonstrate a consistent inverse relationship between LDL cholesterol reduction and CHD risk.
- No adverse effects were observed in studies maintaining low LDL cholesterol levels (<70 mg/dl).
- Potent statins like rosuvastatin and atorvastatin are effective, but combination therapy may be needed for some patients.
Conclusions:
- Achieving and maintaining very low LDL cholesterol levels is safe and reduces coronary heart disease risk.
- Aggressive lipid-lowering strategies, including potent statins and combination therapies, are warranted for high-risk individuals.
Abstract:
Many epidemiologic studies and clinical trials have demonstrated the linear relation between elevated serum levels of low-density lipoprotein (LDL) cholesterol and the risk for coronary heart disease. Conversely, for each 1% reduction in LDL cholesterol in clinical trials, there is a corresponding 1% reduction in coronary heart disease risk. Although the degree of reduction is more important in affecting risk than the means used to lower LDL, statins are considered the most consistently effective means of lowering LDL. The National Cholesterol Education Program now recommends an optional goal of <70 mg/dl for patients at very high risk for coronary heart disease. In conclusion, on the basis of completed clinical trials, there is no evidence that achieving and maintaining such low levels of LDL cholesterol result in adverse effects. The most potent statins, rosuvastatin and atorvastatin, are capable of getting most patients to their LDL cholesterol goals, but combinations of statins with other drugs may be necessary for patients who require additional lipid lowering.
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