Sleep 8 to 9 hours a night. Log at least 42 minutes of moderate-to-vigorous activity a day. Eat a reasonably healthy diet. That is the combination a large new study links to a 57% lower risk of major cardiovascular events.
The analysis tracked 53,242 UK Biobank participants for a median of eight years and was published in March 2026 in the European Journal of Preventive Cardiology. Sleep and physical activity were captured with wrist-worn accelerometers rather than self-report.
The University of Sydney team also found that even modest tweaks mattered. Adding about 11 extra minutes of sleep, roughly 5 more minutes of daily activity, and a small bump in diet quality was tied to a 10% lower risk of heart attack, stroke, or cardiovascular death.
How the combination played out
Cardiovascular guidance usually treats sleep, exercise, and diet as separate targets. The Sydney team instead sorted participants into 27 groups based on where they fell across all three behaviors together.
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People at the median combined score had a 41% lower risk of a major cardiovascular event than those with the least favorable trio. The optimal group, hitting the best combination of all three, cut that risk by 57%.
Major events in the analysis covered nonfatal heart attack, nonfatal stroke, and cardiovascular death.
Small shifts still register
The 42 minutes of daily activity the researchers flagged sits well above the standard 150 minutes per week most public health bodies recommend. The incremental finding suggests people far from that mark can still move the needle without overhauling their routine.
"We show that combining small changes in a few areas of our lives can have a surprisingly large positive impact on our cardiovascular health," said Dr. Nicholas Koemel of the University of Sydney, the study's lead author.
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The design is observational, so the numbers show association rather than proof of cause. The authors call for intervention trials to test whether nudging these habits together delivers the same benefit. Anyone with existing heart concerns should talk to a physician before major lifestyle changes.
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This article is made and published by Jesper Bengtson, who may have used AI in the preparation.