Research suggests that 'sleep regularity' has a greater impact on lifespan than 'sleep duration.'
We often hear that insufficient sleep negatively impacts health, but in fact, not only the duration of sleep but also its regularity is important. A paper published in the academic journal '
Sleep regularity is a stronger predictor of mortality risk than sleep duration: A prospective cohort study | SLEEP | Oxford Academic
https://academic.oup.com/sleep/article/47/1/zsad253/7280269
Is sleep regularity more important than sleep duration?: A large-scale cohort study using objective data | Research Center for the Prevention of Death from Overwork (RECORDs)
https://records.johas.go.jp/article/211
The research team conducted their analysis based on sleep data from the UK Biobank , a large-scale health information database collected in the UK. The UK Biobank's sleep data is collected by wearing an Axivity AX3 accelerometer on the arm.
The research team calculated a Sleep Regularity Index (SRI), which indicates the degree to which individuals slept at the same time each day, based on sleep data, and evaluated its association with mortality risk. The graph below shows the relationship between sleep regularity and mortality risk on the left and the relationship between sleep duration and mortality risk on the right, with the lower the vertical axis, the higher the mortality risk. The red line represents the group with the most disrupted sleep regularity or the group with the shortest sleep duration, showing that the group with the most disrupted sleep regularity had a greater increase in mortality risk.
Based on their analysis, the research team concluded that 'while sleep duration is indeed an important factor in predicting mortality risk, sleep regularity is an even stronger predictor.'
Other studies have also investigated the impact of sleep patterns on health, and a 2024 study concluded that 'even with longer sleep durations, irregular sleep patterns increase the risk of heart attack and stroke.'
Even long sleep durations can increase the risk of heart attack and stroke if they are irregular - GIGAZINE
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in Science, Posted by log1o_hf