The Study
Long-term outcomes according to absolute value vs. percentage reduction in low-density lipoprotein cholesterol levels after acute myocardial infarction
This study looked at people who had heart attacks and noticed that those whose bad cholesterol dropped a lot after treatment tended to have fewer heart problems later. But it didn’t make anyone change their medicine—it just watched what happened. So we can’t say the drop in cholesterol caused the better outcomes, just that they often happened together.
Analysis score
Maximum 72 for a cohort study.
Where the score came from
After a heart attack, doctors try to lower your bad cholesterol. This study looked at whether it's better to hit a specific number (like under 55) or to cut your cholesterol by at least half from what it was before.
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 559 / 100
Quality score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — cutting cholesterol by half after a heart attack is more reliably helpful than chasing ultra-low numbers, which may reflect sicker patients rather than better treatment.
- 2Cutting cholesterol by half or more lowered heart attack risk by 24%.
- 3But going below 55 mg/dL didn't help more than staying between 55–69 mg/dL — and might even be linked to higher risk.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Frontiers in Cardiovascular Medicine
Year
2025
Authors
K. Cho, J. Yang, Sang Yeub Lee, M. Shin, S. Oh, Min Chul Kim, D. Sim, Young Joon Hong, Ju Han Kim, Youngkeun Ahn, J. Lee, J. Kwun, Young-Hoon Jeong, J. Hahn, J. Hwang, M. Jeong, Weon Kim
Related Content
Claims (7)
For patients with atherosclerotic cardiovascular disease, lowering LDL cholesterol to below 55 mg/dL instead of 70 mg/dL reduces major heart events by 33% over three years and results in lower rates of kidney function marker elevation.
In patients with established atherosclerotic cardiovascular disease, reducing LDL cholesterol to below 55 mg/dL lowers the rate of major heart events by 33%, improves kidney function, and does not increase safety risks.
In adults who have had a heart attack, LDL cholesterol levels below 55 mg/dL are linked to the same or higher rates of serious heart problems compared to levels between 55 and 69 mg/dL, suggesting a U-shaped risk pattern.
In adults recovering from a heart attack, having LDL cholesterol below 55 mg/dL does not lead to better heart outcomes than levels between 55–69 mg/dL, and lower levels may be linked to higher risk because of other health problems like frailty or chronic illness.
In people recovering from a heart attack, lowering LDL cholesterol improves heart health outcomes equally in men and women.
In adults recovering from a heart attack, how much LDL cholesterol decreases matters more for reducing future heart risk than how low the LDL cholesterol level is at a single point in time.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.