How you sleep can impact your heart

A study in The Netherlands observed the relationship between sleep and heart disease among 20,432 men and women. Researchers found that short sleep contributes to cardiovascular disease and coronary heart disease.

The research was conducted over a 12-year period. None of the Dutch participants had any heart disease when first examined. But during years of follow-ups, more than 2,600 cases of cardiovascular disease and coronary heart disease developed. The study was able to link these heart diseases to particular sleep habits.

Short sleepers had a 15 percent higher chance of cardiovascular disease. Short sleepers with sub-par sleep quality had an even higher chance, 63 percent. The chance for developing coronary heart disease was 23 percent higher in short sleepers. And for short sleepers with a poor quality of sleep, the chance of developing coronary heart disease was 79 percent higher.

Short sleep was defined as six hours of sleep or less. Long sleep was considered sleep for nine hours or more. There were no links seen between long sleep and cardiovascular disease or coronary heart disease.

The study was published in the November issue of the journal SLEEP. Read more about sleep and heart-related issues at the Sleep Education Blog.

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Sleep 7 Hours to Avoid Cardiovascular Disease

Seven hours is the magic number for a healthy heart. Sleeping too little or too much can elevates your risk for heart disease, a new study shows.

Heart attack, stroke, coronary heart disease and angina are twice as prevalent among people who consistently get less than five hours of sleep. Sleeping in isn’t much better. The rate of cardiovascular disease is one-and-a-half times higher for people who sleep nine hours per night.

The conclusions were based on data from a large 2005 survey featuring questions about sleep length and incidence of heart disease. A study that analyzed the data was published in the August 1st issue of SLEEP.

The authors analyzed how 30,307 adults responded to the 2005 National Health Interview Survey. The survey also collected information on demographic factors, socioeconomic characteristics, lifestyle and health. About 2,100 respondents reported some form of heart disease.

Surprisingly, people who slept six or eight hours a night also had a moderately elevated risk. The American Academy of Sleep Medicine recommends the average adult needs seven to eight hours of sleep, though individual sleep needs may vary.

Adults under 60 years of age had the highest association between short sleep and cardiovascular disease. This relationship affects women more than men.
The initial data was adjusted to account for complicating factors such as smoking, alcohol consumption and body mass index. The relationship between sleep duration and heart disease remained high after researchers excluded subjects with diabetes, hypertension and depression.

Short sleep duration is associated with metabolic disease and hardened arteries. Long sleep duration may be related to other underlying problems.

If you’re meeting your sleep needs yet still feel fatigued you may have a sleep-related breathing disorder such as obstructive sleep apnea, a condition that can lead to heart problems or even death. Sleep apnea occurs when excess fatty tissue in the throat periodically interrupts air flow. Anyone can have sleep apnea, even though it’s most common in obese or older populations. There are several effective treatments, but an overnight sleep study is first required for diagnosis.

Sleeping well should be as much a priority as staying physically active in protecting your heart health. Even an extra hour of sleep can potentially save your life in the long term.

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