- An analysis of more than one million nights of sleep has revealed that varying bedtimes and sleep lengths significantly increases the risk of heart attacks and strokes.
- Research tracking over 10,000 adults found that night-to-night variations in sleep timing were linked to a 20 to 23 per cent higher risk of serious cardiovascular problems.
- Every 29-minute increase in sleep duration variability was associated with a 20 per cent higher risk of heart failure and a 29 per cent higher risk of heart muscle disease.
- Completing more full sleep cycles per night reduced irregular heartbeat risk by 28 per cent, while unusually long cycles increased heart attack or stroke risk by 55 per cent.
- Lead researcher Dr Nguyen Minh Tuan Viet emphasised that maintaining consistent bedtimes and wake times is a practical step to protect heart health.
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