Your bedtime impacts coronary heart well being. Right here’s why going to sleep at 10 p.m. could save your life

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(StudyFinds) – Bedtime is likely something a lot of people associate only with children. However, a new study shows that adults too should be just as strict with their own sleep cycles. Researchers found that going to bed between 10:00 PM and 11:00 PM local time reduced the risk of heart disease compared to any other time of the night.

While bedtime after midnight had the highest increase in cardiac-related health deterioration, the team found that even bedtime before 10:00 p.m. increased the risk of cardiovascular disease in adults.

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“The body has an internal 24-hour clock, the so-called circadian rhythm, which helps regulate physical and mental function,” says study author Dr. David Plans from the University of Exeter in a news release. “Although we cannot deduce any causality from our study, the results suggest that early or late bedtime can be more likely to disrupt the internal clock, with negative consequences for cardiovascular health.”

Study authors add that there has been a lot of research into the relationship between the length of time you sleep and the effect it has on your heart. However, the relationship between bedtime and heart disease has remained unclear.

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The researchers examined over 88,000 UK biobank participants who were recruited between 2006 and 2010. These people were between 43 and 79 years old, with nearly 60 percent being women. The team collected data on their sleeping habits through wrist monitors for seven days and collected information about each person’s health history and lifestyle using a questionnaire.

Over the next six years, 3.6 percent of the group (3,172 participants) developed cardiovascular disease – they experienced various heart-related events such as stroke, heart failure, heart attack, and chronic ischemic heart disease.

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The results show that the highest rates of heart disease occurred in people who went to sleep after midnight. Conversely, the lowest were those who fell asleep between 10:00 PM and 10:59 PM each night

Overall, people who fell asleep after midnight had a 25 percent higher risk of developing heart disease than those who slept before bed. Those who went to bed between 11 p.m. and midnight had a 12 percent higher risk of developing heart problems. Meanwhile, people who slept before 10 p.m. also had a 24 percent higher risk of heart disease than those who went to bed after 10 a.m.

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When the researchers looked deeper into the results, they found that the link between bedtime and heart disease appears to be stronger in women than in men. However, scientists found that men who go to bed before 10 p.m. continue to be at higher risk for cardiovascular disease.

“Our study shows that the optimal time to fall asleep is at a certain point in the body’s 24-hour cycle and deviations can be harmful to health. The riskiest time was after midnight, possibly because it reduces the chances of seeing the morning light, which sets the internal clock back, ”reports Dr. Plan.

Why is bedtime more important for women?

“There may be a gender difference in how the endocrine system responds to a disruption in the circadian rhythm. Alternatively, the older age of the study participants could be a disruptive factor as the cardiovascular risk in postmenopausal women increases – which means that the strength of the association between women and men may not be different, ”explains Dr. Plan.

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“Although the results show no causality, sleep timing has been shown to be a potential cardiac risk factor – independent of other risk factors and sleep characteristics. If our results are confirmed in other studies, sleep timing and basic sleep hygiene could be a cost-effective public health goal to reduce the risk of heart disease. ”

The results will be published in the European Heart Journal – Digital Health.

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