A large study has found that silent atherosclerosis, a buildup of plaque inside arteries that produces no obvious symptoms, is widespread across the adult lifespan, according to a report by News-Medical. The findings come from the REACT study, which mapped the condition across different age groups and found it present far more broadly than many people might expect.
Atherosclerosis is the underlying condition behind most heart attacks and strokes. Plaque accumulates inside artery walls over time, narrowing them and restricting blood flow. The danger is that many people have significant buildup without knowing it. No chest pain, no warning signs. By the time symptoms appear, the disease may already be advanced.
The REACT study set out to document how common this silent form of the disease actually is across the adult population. The results showed it was not limited to older adults. Researchers found the condition mapped across a wide range of ages, suggesting that artery disease begins accumulating earlier in life than clinical diagnoses typically reflect.
The implications for preventive medicine are significant. If atherosclerosis is silently progressing in younger and middle-aged adults, the window for intervention through lifestyle changes, medication, or monitoring may be wider than current practice assumes. Most people do not receive imaging or screening for artery health unless they already have risk factors that prompt a physician to order tests.
The study adds to a growing body of research suggesting that cardiovascular disease should be understood as a process that unfolds over decades, not a condition that appears suddenly in older age. Identifying it early, before symptoms develop, remains one of the central challenges in heart disease prevention.
The REACT study's mapping of atherosclerosis across the adult lifespan gives researchers and clinicians a clearer picture of when and how broadly the disease takes hold. Further work will likely focus on what that means for screening guidelines and at what age preventive intervention is most effective.
