Most Americans grow up believing heart disease is an older person's problem. A study of 1,283 adults with an average age of 23 suggests otherwise. Nearly 80% already met the criteria for cardiovascular-kidney-metabolic (CKM) syndrome, a cluster of interconnected risks that can push a young body onto a fast track toward arterial damage.
The findings, published August 20, 2026 in Circulation: Population Health and Outcomes, came from the Future of Families-Cardiovascular Health Among Young Adults (FF-CHAYA) study, a diverse cohort followed since childhood.
About 21% of participants had no CKM risk factors at all. The rest, roughly four in five, had excess body fat, metabolic problems or early signs of subclinical cardiovascular disease.
Ultrasound scans of the participants' carotid arteries in the neck revealed something researchers rarely expect to find so early. Those with more advanced CKM stages had thicker arterial walls, an early marker of atherosclerosis. Their scores on the American Heart Association's Life's Essential 8, a checklist of everyday cardiovascular health metrics, were also lower.
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What CKM syndrome actually means
The American Heart Association defined CKM syndrome in a 2023 presidential advisory as the overlap between cardiovascular disease, chronic kidney disease, type 2 diabetes and obesity, conditions that feed off one another and hit the heart hardest.
The framework runs from Stage 0, no risk factors, through Stage 4, symptomatic cardiovascular disease. Stage 1 begins with excess body fat or abdominal obesity, Stage 2 adds metabolic risk factors or kidney disease, and Stage 3 marks early, still-silent cardiovascular changes.
Under the 2023 advisory, roughly one in three US adults already carry three or more risk factors linked to cardiovascular, metabolic or kidney disease. The new FF-CHAYA data suggest the problem starts long before middle age.
Why the reading matters in your 20s
The senior author of the new analysis, Donald Lloyd-Jones, M.D., M.S., a cardiologist at Boston Medical Center and director of the Framingham Center for Population and Prevention Science, said the two frameworks complement each other.
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"The study shows that CKM syndrome staging and Life's Essential 8 are complementary for identifying adults younger than age 30 who may be on the fast track for arterial injury, plaque buildup and, ultimately, at higher risk for future cardiovascular events," he said in the AHA release.
Arterial damage at 23 is not a diagnosis of heart disease. But narrowed or thickened vessels in the neck are one of the earliest visible changes on the road to a heart attack or stroke decades later. The authors argue that waiting until 40 to start cardiovascular risk assessment misses a long window when the trajectory can still be bent.
The eight everyday levers
Life's Essential 8, first outlined in a 2022 AHA presidential advisory, is built around eight cardiovascular health measures: a healthy diet, physical activity, avoiding nicotine, healthy sleep, healthy weight, and healthy levels of blood lipids, blood glucose and blood pressure. Each is scored 0 to 100 and averaged into a single number.
Four of those levers are behaviors, and four are health factors that behaviors help shape. Lloyd-Jones told the AHA that in his own practice, he steers young patients toward the checklist rather than a scary label.
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"In my practice, and what I would recommend, is that the conversation focuses on Life's Essential 8 and optimizing as many of those metrics as possible for better health today and in the long term."
Young adults with symptoms of high blood pressure, unusual fatigue, or a family history of early cardiovascular disease should talk with a doctor rather than self-diagnose from a stage number. The value of the new research is less about individual alarm and more about a shift in the age at which the conversation should begin.
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This article is made and published by Jesper Bengtson, who may have used AI in the preparation.