[LDL-cholesterol hypothesis:the lower is trully better]
Related Experiment Video
Updated: Feb 1, 2026

LDL Cholesterol Uptake Assay Using Live Cell Imaging Analysis with Cell Health Monitoring
Published on: November 17, 2018
Bertrand Cariou1,2, Sarra Smati1
1Clinique d'endocrinologie.
Insights
The LDL-cholesterol (LDL-C) hypothesis posits that lowering LDL-C reduces cardiovascular risk. Clinical trials confirm that reducing LDL-C with drugs like statins and ezetimibe effectively lowers cardiovascular events.
Area of Science:
- Cardiology
- Metabolic Disorders
- Preventive Medicine
Background:
- The LDL-cholesterol (LDL-C) hypothesis proposes elevated LDL-C as a primary driver of atherosclerosis and cardiovascular diseases (CVD).
- It suggests that lowering LDL-C levels through diet or medication is a key strategy for preventing cardiovascular events.
Purpose of the Study:
- To review the evidence supporting the LDL-cholesterol hypothesis.
- To discuss the role of lipid-lowering therapies in reducing cardiovascular events.
- To explore the concept of individualized LDL-C targets and future therapeutic strategies.
Main Methods:
- Review of epidemiological and genetic studies supporting the LDL-C hypothesis.
- Analysis of randomized clinical trials involving lipid-lowering drugs, including statins and ezetimibe.
- Discussion of emerging evidence from PCSK9 inhibitor trials.
Main Results:
- Epidemiological, genetic, and clinical trial data consistently support the LDL-C hypothesis.
- Randomized trials with statins and ezetimibe demonstrate significant reductions in cardiovascular events with LDL-C lowering.
- Recent trial results reinforce the LDL-C hypothesis over drug-specific hypotheses.
Conclusions:
- Lowering LDL-C is a proven strategy for reducing cardiovascular events.
- Individualized LDL-C targets based on cardiovascular risk are more logical than a one-size-fits-all approach.
- Future research on PCSK9 inhibitors will refine optimal LDL-C targets and assess the safety of very low LDL-C levels.
Abstract:
LDL-cholesterol hypothesis : the lower is trully better. LDL-cholesterol (LDL-C) hypothesis is the concept that elevated LDL-C is a main risk factor in the development of atherosclerosis and consequently in cardiovascular diseases. By extension, the LDL-hypothesis also states that reducing LDL-C levels by nutritional and/or pharmacological approaches is an efficient strategy to reduce cardiovascular events. Concordant evidence supports the LDL-hypothesis, including epidemiologic and genetic studies. Importantly, randomized clinical trials with lipid-lowering drugs, mainly statins, have clearly demonstrated that the reduction of LDL-C levels is associated to a reduction of cardiovascular events. The results from recent clinical trials with ezetemibe (a non-statin hypolipidemic drug) further reinforce the LDL-hypothesis instead of the statin hypothesis. Thus, it seems more logical to define a LDL-target, which is tailored to the cardiovascular risk of each subject, rather than emphasize a therapeutic strategy with statins only. The oncoming results from cardiovascular outcomes studies with PCSK9 inhibitors will help to precise the optimal LDL-C target as well as the safety of achieving very-low LDL-C concentrations.
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