Heart Attacks in Young Adults Are Rising; New National Data Identifies the Trend

A new nationwide analysis is putting numbers behind a trend interventional cardiologists have been seeing in the cath lab for years: more young adults are having heart attacks, and the trajectory is accelerating.

For decades, STEMI, the most severe and time-critical form of heart attack, has been declining in incidence and mortality across the general population, a result of better risk-factor control, faster door-to-balloon times, and improved secondary prevention. Young adults have not shared in that progress. A study led by Dr. Michael Megaly of Integris Health Heart Hospital in Oklahoma City as senior author, set out to quantify exactly how the trend has diverged in patients aged 18 to 40.

Using the TriNetX Research Network, the study team analyzed a cohort of nearly 34.9 million patients between the ages of 18 and 40 from January 2004 through December 2023. STEMI incidence rose significantly over the study period, increasing by 1.59 cases per 100,000 person-years (p < 0.0001). Mortality followed the same trajectory, climbing by 108 per 100,000 annually (p < 0.0001), while use of mechanical circulatory support in this age group rose by 38.8 per 100,000 per year (p < 0.0001). The rise in cardiovascular risk factors tracked alongside these outcomes — diabetes, hypertension, nicotine dependence, obesity, cocaine use disorder, and stimulant use disorder all increased significantly across the same two decades. Notably, the uptrend in STEMI incidence, mortality, and MCS use was steeper in the years following the COVID-19 pandemic than before it.

The clinical implication is straightforward: a heart attack in a patient under 40 is no longer a rare outlier to be explained away. It's a pattern with an identifiable risk-factor signature, and one that is intensifying rather than resolving. For referring physicians, that argues for a lower threshold to investigate cardiac chest pain in younger patients rather than defaulting to non-cardiac etiologies. For a complex PCI and CTO program, it also reinforces why mechanical circulatory support capability matters even in younger patients; this cohort's rising need for MCS suggests these are not always straightforward, low-risk presentations.

The study's authors call for further research into prevention and treatment strategies specifically tailored to STEMI in young adults in the post-COVID era, a gap this dataset makes clear is widening rather than closing.

Citation: Khalil M, Dulal D, Younes A, Albeyoumi H, Maraey A, Elzanaty AM, Brilakis ES, Alaswad K, Basir MB, Megaly M. Trends of myocardial infarction in young patients. Cardiovascular Revascularization Medicine. 2026 Jan 26.

Dr. Michael Megaly specializes in complex and high-risk coronary interventions, chronic total occlusion (CTO) PCI, surgical turn-downs, complex peripheral artery disease, and limb salvage at Integris Health Heart Hospital in Oklahoma City.