Inadequate or long sleep can cause heart disease risk


Baba Health Tips

A new study from South Korea suggests, poor-quality sleep may be linked to early signs of heart disease in asymptomatic healthy adults.

47, 000 random men and women were chosen to complete a sleep questionnaire and then, underwent assessments of coronary artery calcium and plaque including brachial-ankle pulse wave velocity (PWV). According to Dr. Chan-Won Kim, of Kangbuk Samsung Hospital of Sungkyunkwan University School of Medicine in Seoul, South Korea, the participants’ average sleep time was 6.4 hours per night and about 84 percent of them said the quality of their sleep was “good”.

Those who got five or less hours to sleep per night were considered as “short” sleepers where as those who slept for nine or more hours were considered as “long” sleepers by researchers. Results of few tests showed that short sleepers have 50 percent more coronary artery calcium than those who got seven hours of sleep per night. According to results in Arteriosclerosis, Thrombosis and Vascular Biology, long sleepers had about 70 percent more calcium than those who slept for seven hours.

The ones who reported poor sleep quality also have a tendency to have more coronary calcium and more artery rigidity.

In fact, a 2013 study showed that people who have less than six hours of sleep daily were the ones who are more likely to have high blood pressure, diabetes, high cholesterol and to be obese.

Dr. Yoosoo Chang, of the Kangbuk Samsung Hospital, said adults who have poor quality of sleep have stiffer arteries than those who sleep for seven hours and have a good quality sleep. Overall, it can be said that the lowest levels of vascular disease are found in adults who sleep for seven hours daily and who reported a good sleep quality.

Short sleepers are more likely to be older, smokers, have depression and type 2 diabetes.

Kim said through an email that the connection between too short or too long durations of sleep and poor quality of sleep with early signs of heart disease, like coronary calcium and arterial rigidity, shows strong support to the increasing evidence that’s links insufficient sleep with an increased risk of heart attacks.

Kim added, it is not still clear if poor quality sleep is the cause of ill health but we can say that good quality sleep leads a healthy lifestyle and electronic media at bedtime should be avoided.

Doctors find it helpful to evaluate sleep duration and the sleep quality while analyzing health status of their patients.

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