Friday, October 3, 2025

99% of Heart Attacks and Strokes Linked to Preventable Health Risks

Key Takeaways

Heart attacks and strokes are often linked to risk factors that can be identified and managed through lifestyle changes and medication. Four primary risk factors—smoking, high blood pressure, elevated cholesterol, and high blood sugar—are associated with nearly every heart attack and stroke.

By managing these risk factors, individuals can significantly reduce their chances of experiencing a cardiac crisis. A recent study highlights that almost every case of heart disease, stroke, or heart failure is tied to at least one cardiovascular risk factor. Researchers analyzed health records from over 600,000 Korean adults and nearly 1,200 American adults who had experienced such events.

Before reaching a critical point, 99% of participants in both groups had developed at least one of the four common risk factors. This suggests that heart disease is not always sudden but often has warning signs.

Many People Unknowingly Had Multiple Risk Factors

Many individuals who believed they were healthy until experiencing heart failure, a heart attack, or a stroke were unaware of their risk. The study found that more than 9 out of 10 participants had two or more risk factors. Specifically, 93% of Koreans and 97% of Americans had multiple risk factors.

The findings, published in the Journal of the American College of Cardiology, were consistent across age groups and applicable to both men and women. Even among women under 60, over 95% of participants had at least one risk factor.

Don’t Ignore High Blood Pressure

High blood pressure was the most prevalent risk factor, affecting up to 96% of participants. In contrast, having a current or former smoking habit was less common, impacting about 68% of patients.

It’s important to note that the study wasn’t designed to determine whether these risk factors directly cause heart disease or stroke. Additionally, the results may not fully apply to people from different racial or ethnic backgrounds, as the study primarily involved Korean adults.

Despite this, the findings emphasize that prevention is possible for many. Yu Chen, PhD, MPH, an epidemiology professor at New York University, noted that nearly all cases of heart disease, stroke, or heart failure occurred in individuals who already had at least one risk factor. This indicates that these conditions rarely occur without prior warning.

How to Reduce Your Risk of Heart Attack, Heart Failure, and Stroke

According to the American Heart Association, there are several straightforward steps to lower your risk:

  • Get enough sleep: Adults should aim for seven to nine hours of sleep per night.
  • Maintain a healthy weight: Strive for a body mass index (BMI) between 18.5 and 25. Free BMI calculators are available online.
  • Manage cholesterol: A simple blood test can check your levels. Diet, exercise, and medication can help if needed.
  • Control blood sugar: Hemoglobin A1C tests reflect average blood sugar levels over three months. Your doctor can provide personalized guidance.
  • Lower high blood pressure: Keep your blood pressure within the recommended range. Lifestyle changes and medication can help achieve this.

Instead of waiting to treat risk factors after they develop, it's crucial to talk to your doctor proactively. This allows for discussions on ways to reduce the risk of developing heart disease in the first place.

Additional Tips for a Healthier Lifestyle

In addition to managing specific risk factors, maintaining a balanced diet, engaging in regular physical activity, and avoiding harmful habits like smoking can further support heart health. These actions contribute to overall well-being and can significantly impact long-term health outcomes.

Conclusion

The study underscores the importance of early detection and proactive management of cardiovascular risk factors. By making informed lifestyle choices and working closely with healthcare providers, individuals can take meaningful steps toward preventing heart attacks, strokes, and other serious conditions.