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flag Irregular bedtimes double heart attack and stroke risk, study finds.

flag A new study from the University of Oulu finds that irregular bedtimes may double the risk of heart attacks and strokes, especially among adults sleeping less than eight hours per night. flag Using wearable data from 3,231 adults, researchers found that daily variations in when people go to bed—rather than wake-up times—were strongly linked to cardiovascular risks, suggesting that maintaining a consistent sleep schedule is key to heart health.

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