Study Finds Link Between Cardiovascular Disease and Bedtime
Previous research suggests that not getting enough sleep can be responsible for developing CVD. Nevertheless, less attention is given to the time when we go to sleep and how this may impact cardiovascular health. A recent study conducted by researchers at Huma Therapeutics indicates there may be a link between bedtime and CVD. This study found that women who go to bed between 10 and 11 p.m. are less likely to develop cardiovascular disease than women who go to sleep either earlier or later.
Dr. Plans, one of the researchers, believes that the best time to go to sleep is at a specific point in the body’s 24-hour cycle, and any changes may cause harm to our health. His finding is that the riskiest time for falling asleep is after midnight.
All of the participants in the study filled out questionnaires where they reported their age, sex, sociodemographic status, their experience of interrupted sleep, the amount of sleep they were used to, their chronotype, and whether they smoked. The research team examined their blood pressure and cholesterol levels, body mass index, and presence of diabetes. Each participant was given a wrist accelerometer for precise tracking of the onset of sleep based on the participants’ lack of movement.
The researchers discovered that the risk of developing CVD was different for women than for men. The lowest incidence of CVD was found in women who went to sleep between 10:00 and 10:59 p.m, while the highest risk was connected with going to bed after midnight or before 10:00 p.m. Moreover, the only strong connection to a higher risk of CVD in men was found in those who went to sleep before 10:00 p.m. It is recognized that sleep apnea is a common condition, which can impact people’s cardiovascular risk.
Although the study’s results don’t show causality, bedtime may be a potential cardiac risk factor independent of other risk factors. However, further research is needed to investigate whether sleep timing could be a low-cost public health target for lowering CVD risk.
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