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Varying Sleep Times Raise Heart Risk
3 Nov
Summary
- Irregular sleep schedules linked to increased heart attack and stroke risk.
- Every 29-minute sleep duration variation raises disease risk.
- Consistent sleep timing is an actionable step for heart protection.
New research analyzing over a million nights of sleep indicates that irregular sleep patterns can substantially harm heart health. Experts found that varying sleep timing and duration nightly is linked to a significant increase in the risk of serious cardiovascular issues, including heart attack, stroke, and heart failure.
The study, involving over 10,000 adults, observed that changes in sleep timing over six months correlated with a 20 to 23 percent higher risk of these conditions. Furthermore, every 29-minute increase in sleep duration variability from night to night was associated with a 29 percent higher risk of heart muscle disease and a 20 percent higher risk of heart failure.
Conversely, completing more complete sleep cycles each night was linked to a lower risk of atrial arrhythmia. However, unusually long sleep cycles were associated with a 55 percent higher risk of heart attack or stroke. Researchers emphasize that while sleep quality can be uncontrollable, sleep regularity—consistent bedtimes and wake-up times—is an actionable measure for protecting cardiovascular health.
