High Heart Calcium Scores May Boost Long-Term Risk
Younger adults with elevated calcium scores show a higher risk of heart-related death over a 30-year period.
Updated on Oct. 27, 2026 in Heart Disease
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A new study published in JAMA Cardiology shows that adults aged 30 to 45 with high coronary artery calcium (CAC) scores face a significantly elevated risk of death over 30 years. The findings provide new insight into long-term cardiovascular health markers for young adults.
Why it matters
Understanding long-term mortality risks early in life can help patients and doctors identify those who may benefit from proactive preventive measures. This research suggests that scanning for plaque buildup may offer critical diagnostic value decades before standard screening age.
In a cohort study of nearly 13,000 adults aged 30 to 45, researchers analyzed the link between coronary artery calcium scores and mortality over a median follow-up of 22.6 years. Findings showed substantially higher hazard ratios for heart-related deaths in those with high calcium scores compared to those with a score of zero.
The players
JAMA Cardiology
A peer-reviewed medical journal published by the American Medical Association that focuses on advancements in the diagnosis and treatment of heart disease.
The details
Coronary artery calcium (CAC) scores measure the volume of calcified plaque in the arteries supplying the heart. Researchers used multivariable regression models, adjusted for traditional risk factors, sex, and age, to determine how these early-life deposits correlate with long-term survival. The analysis suggests that higher levels of arterial calcification act as a persistent marker of vascular damage that remains predictive of coronary heart disease decades later.
Timeline
The study analysis period occurred from October 2025 to September 2026.
Findings were published in JAMA Cardiology on October 23, 2026.
Health Landscape
This study extends the work of the CAC Consortium, which tracks long-term arterial health data across multiple U.S. institutions to refine cardiovascular risk stratification. By focusing on younger adults, the findings update our understanding of how early-life vascular markers shape long-term health.
If you are an adult under 45, the role of screening tests like CAC scans is worth discussing with your doctor to understand your personal cardiovascular risk profile. These results reinforce the importance of maintaining healthy blood pressure and cholesterol levels, which are traditional factors frequently considered alongside calcification markers.
The takeaway
Early signs of arterial plaque in your 30s or 40s may serve as an important indicator of long-term health risk that warrants clinical attention. Talk to your primary care provider about your overall cardiovascular risk factors and whether specific diagnostic screenings are appropriate for your medical history.
Further reading
For more on managing long-term heart health, visit our guide on Heart Disease.
Source note: This article includes information reported by American College of Cardiology.
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