Nearly Universal Presence of Cardiovascular Risk Factors Before Major Events

Recent research published in the *Journal of the American College of Cardiology* reveals that over 99% of individuals who experience major cardiovascular events—such as heart attacks, strokes, or heart failure—had at least one modifiable risk factor prior to their diagnosis. This study, conducted by researchers from Northwestern University Feinberg School of Medicine in Chicago and Yonsei University College of Medicine in Seoul, South Korea, analyzed health records from over 9 million adults in South Korea and nearly 7,000 in the United States over a period exceeding a decade.

Cardiovascular Risk Factor Commonly Precedes a Cardiac Event

The study focused on four primary cardiovascular risk factors: elevated blood pressure, high cholesterol, high blood sugar, and smoking. Researchers defined "nonoptimal" levels based on the American Heart Association's criteria, which are stricter than typical clinical guidelines. For instance, a systolic blood pressure of 120-139 mm Hg was considered nonoptimal, even if it did not meet the criteria for hypertension. The analysis indicated that 95.6% to 96.1% of individuals in South Korea and 93.0% to 96.8% in the U.S. had elevated blood pressure before their cardiovascular events. Other significant findings included elevated cholesterol levels affecting 75.8% to 84.7% of participants in Korea and 70.7% to 77.8% in the U.S., while elevated blood sugar was present in 72.8% to 77.7% of Koreans and 53.8% to 60.3% of Americans.

HealthLineThe warning signs that come before almost every heart attack, stroke or heart failureRTTNewsCardiovascular Risk Factor Commonly Precedes a Cardiac Event

The findings challenge the notion that cardiovascular events occur without warning signs. Dr. Philip Greenland, a senior author of the study, emphasized the need for increased attention to early detection and management of these modifiable risk factors. He stated, “We think the study shows very convincingly that exposure to one or more nonoptimal risk factors before these cardiovascular outcomes is nearly 100%.” The study suggests that addressing even mild elevations in these risk factors through lifestyle changes or medications could significantly reduce the incidence of serious cardiovascular diseases.

Philly VoiceThe warning signs that come before almost every heart attack, stroke or heart failureCardiovascular Risk Factor Commonly Precedes a Cardiac EventKCRA 3HealthLine

While the study presents compelling evidence regarding the prevalence of risk factors, some experts caution against oversimplifying the causes of cardiovascular disease. Dr. Susan Cheng, a professor at Cedars-Sinai Medical Center, noted that while the research reinforces the importance of managing known risk factors, it does not rule out the possibility of other, less understood factors contributing to cardiovascular events.

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• “We think the study shows very convincingly that exposure to one or more nonoptimal risk factors before these cardiovascular outcomes is nearly 100%,” — Dr. Philip Greenland, Northwestern University Feinberg School of Medicine

Cardiovascular Risk Factor Commonly Precedes a Cardiac Event

• “Even 'mild' elevations of these 4 factors should be addressed with lifestyle treatments or medications,” — Dr. Philip Greenland, Northwestern University Feinberg School of Medicine

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The study underscores the critical role of modifiable risk factors in the development of cardiovascular diseases. With a significant majority of individuals exhibiting at least one risk factor prior to major cardiovascular events, there is a clear imperative for healthcare providers and patients to prioritize early detection and management strategies to mitigate these risks.

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