For cardiovascular health, sleep plays an essential role. Thus, many studies have already shown that a night that is too short or too long increases the risk of cardiovascular disease.
Greek researchers recently revealed that below six hours of sleep, and above eight hours, the risk of stroke is increased.
But the number of hours spent in Morpheus’s arms is not the only indicator of good heart health. Bedtime would also be important.
“The body has a 24-hour internal clock, called the circadian rhythm, which helps regulate physical and mental functioning,” says Dr David Plans of the University of Exeter, UK. Going to bed early or late could be more likely to disrupt this body clock, with adverse consequences for cardiovascular health. “
25% risk of falling asleep after midnight
With his team, the researcher recruited 88,000 of his compatriots aged on average 61 years between 2006 and 2010. Data on falling asleep and waking time were regularly collected using an accelerometer worn on the computer. wrist. Lifestyle assessments and cardiovascular exams were also performed.
Result: Compared to those who fell asleep between 10 p.m. and 10:59 p.m., the risk of developing cardiovascular disease was increased by:
- 25% for falling asleep after midnight;
- 12% between 11 p.m. and 11:59 p.m.
- 24% before 10 p.m.
“Our study indicates that the optimal time to fall asleep is at a specific point in the body’s 24-hour cycle and that deviations can be detrimental,” note the authors.
“The riskiest time was after midnight, potentially because it can reduce the likelihood of seeing morning light, which resets the body clock. “
Source: Le Progrès : info et actu nationale et régionale – Rhône, Loire, Ain, Haute-Loire et Jura | Le Progrès by www.leprogres.fr.
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