A recent study shows that inconsistent bedtimes can significantly increase the chances of heart disease and stroke, even for those getting the recommended 7 to 9 hours of sleep each night.
Main Findings
The research, published in the Journal of Epidemiology & Community Health, emphasizes that consistent sleep patterns are more important than sleep duration when it comes to preventing heart problems. The researchers explained, “Sleep regularity should be a key factor in maintaining heart health.”
Study Overview
The study tracked 72,269 participants aged 40 to 79. They wore activity trackers for one week, and none had previous heart disease or stroke. Researchers used the data to assign a Sleep Regularity Index score:
- Regular sleepers scored above 87.
- Irregular sleepers scored below 72.
- Moderately regular sleepers had scores between 72 and 87.
After eight years of monitoring, irregular sleepers were 26% more likely to experience a major heart event. Those with moderately regular sleep schedules had an 8% higher risk.
Key Takeaways
The study also revealed that regular sleepers were more likely to meet the recommended sleep hours:
- 7–9 hours for adults aged 18–64
- 7–8 hours for people over 65
The research team found that catching up on sleep didn’t offset the risks caused by irregular bedtimes.
Study Limitations
Some limitations of the study include:
- Data was collected over just one week.
- The study didn’t separate actual sleep from quiet rest.
- Napping wasn’t factored in.
Despite these limitations, the study strongly suggests that consistent sleep schedules should become a focus of public health recommendations.
Health Advice
Heart disease remains one of the top causes of death worldwide. This study highlights how simple sleep habits can significantly reduce the risk of heart attacks and strokes.
Do you follow a regular sleep routine? Share your experience in the comments!
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