If you regularly stay up to catch the late show with the host of your choice, or watch the end of a favorite classic movie, you might be more than a bit drowsy the next day, you might also be putting yourself at risk for some pretty dangerous artery problems.A first ever study, presented at the American College of Cardiology’s 58th Annual Scientific Sessions, looks at bedtimes and health, and finds that men who go to bed after midnight have much more arterial stiffening, an early signal of atherosclerosis (plaque build up on the insides of the arteries).
“There have been many studies about the relationship between sleep – mainly sleep duration – and occurrence of disease, but it remains unclear how bedtime affects cardiovascular risk factors and arterial stiffness, which is the first indication of hardening of the arteries,” suggested Yu Misao, MD, PhD, the study author.
Could the late bedtimes be affecting the health of your heart?
The study by Misao and colleagues set out to answer just this question by testing 251 healthy men no older than 60.
The participants had an annual check-up where their blood pressure, weight, waist circumference, body mass index (BMI) and lipid levels were all measured and recorded.
Brachial ankle pulse wave velocity was used to check for evidence of any arterial stiffening, and any connection with sleeping habits.
Six hours, 20 minutes sleep a night was the average, and most of the subjects reported going to bed at 11:30 pm.
The research found that the fewer hours a man slept each night, the higher his blood pressure, triglyceride levels and blood cholesterol levels were.
“This is consistent with previous reports showing that short sleep duration may negatively affect cardiovascular risk factors,” Misao states.
How much the subjects slept appeared to have no bearing on arterial stiffness.
What the researchers did next was to split the men into three groups according to how many hours they slept at night – less than 6, 6-7 or 7+ hours.
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No one knows why this might be, though Misao speculates that being up later allows for more snacking, (and other unhealthy behaviors for the heart) leading to obesity, a known risk factor for heart disease.
Another possible theory is that going to bed late may activate the sympathetic nervous system, which controls body functions like heart rate as well as how the body reacts to stress.
Maybe burning the midnight oil could be throwing the internal clock off and cause problems in ways we don’t understand.
So while staying up late can help us get things done, or give us a bit of peace after a demanding day, it may also put strain on your arteries, heart and perhaps your whole cardiovascular system.
Other studies have linked chronic sleep loss with serious medical conditions like diabetes, obesity and heart disease.
You don’t need a doctor to tell you that getting the right amount of rest helps you function at your best, makes you better able to mange stress and keeps your body rested and ready to handle physical challenges or fight off illness.
So, a small change in your schedule can help you manage the connections between later bedtimes and heart health.
Good sleep habits, including a getting a sleep routine and having a restful place to sleep are important steps to helping you get the rest your body desires.
You might also want to focus your energy on what experts already know will help to minimize your risk for artery problems – eating a healthy, balanced diet and exercising most days of the week.
Next – just head on over to the Daily Health Bulletin for more information on artery problems linked to late nights, plus for a limited time get 5 free fantastic health reports. Click here for more details on this study on artery problems and late nights.