The Study
Intensive LDL Cholesterol Targeting in Atherosclerotic Cardiovascular Disease
This study is like a fair race between two groups of people with heart disease, where one group tries to get their 'bad' cholesterol really low and the other aims a bit higher. Because people were randomly assigned, we can say that the lower target probably caused fewer heart problems over 3 years.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
Doctors wanted to see if aiming for a really low cholesterol number helps prevent heart problems in people who already have heart disease.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 583 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes, this is meaningful — preventing one heart event for every 32 people treated over 3 years is a strong benefit with no extra harm.
- 233% fewer heart problems happened in the group that aimed for less than 55 mg/dL of LDL cholesterol.
- 36.6% got sick vs.
- 49.7%.
- 5No more side effects were seen, and kidney stress signs were lower.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
New England Journal of Medicine
Year
2026
Authors
Yong-Joon Lee, Seung-Jun Lee, Jin Won Kim, Sang-Hyup Lee, Gwang-Sil Kim, Jae Hyoung Park, Jin-Man Cho, W. Kang, H. Yoon, W. H. Kim, Seung-Jin Lee, Jin Bae Lee, Ji-Yong Jang, Sanghoon Shin, I. H. Park, S. Kwon, Sunwon Kim, Sungwoo Hong, Chul-Min Ahn, Jung-Sun Kim, Y. Ko, D. Choi, M. Hong, Y. Jang, Byeong‐Keuk Kim
Related Content
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Claims (6)
If you've already had heart problems, keeping your 'bad' cholesterol really low—below 55—might help prevent future heart attacks or strokes compared to aiming for a higher level.
For people with heart disease from clogged arteries, getting their bad cholesterol down to around 56 doesn’t cause more serious side effects than staying at 66, and it’s safe to keep it that low for at least three years.
For people who already have heart disease, aiming to get their 'bad' cholesterol (LDL) below 55 mg/dL cuts their risk of serious heart problems by about one-third over three years compared to aiming for below 70 mg/dL — and it doesn’t seem to cause more side effects.
If you have heart disease from clogged arteries, getting your bad cholesterol down to around 56 mg/dL instead of 66 mg/dL can cut your risk of heart attacks or strokes by about a third over three years. For every 32 people treated this way, one person avoids a major heart problem.
For people with heart disease from clogged arteries, keeping bad cholesterol really low—below 55—might be better for your kidneys than keeping it just under 70, especially if you're getting procedures to open up blood vessels.
If you've had heart problems before, aiming to get your 'bad' cholesterol really low—below 55—cuts your risk of another heart issue by about a third compared to keeping it just under 70.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.