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Can Sleep Deprivation Cause Heart Disease And Stroke? Lack of sleep can make one feel tired, forgetful and sometimes even grumpy. People who have inadequate sleep might not be able to make sound judgment and are prone to causing accidents on the road or at their work places. Long period of sleep deprivation may lead to depression and weight gain, too. That is not all. Lack of sleep can even develop serious health problems including heart disease, high blood pressure, stroke and diabetes. Korean researchers recently reported that people who get less than 6 hours of sleep a night may be more likely to develop metabolic syndrome. The combination of risk factors that include high blood sugar, high cholesterol, extra fat around the midsection, high blood pressure and excess amounts of fats in the blood is known as metabolic syndrome. Such syndrome could eventually lead to life threatening and chronic diseases including diabetes, heart disease and strokes. In the study, 2579 adults without metabolic syndrome aged between 40 and 70 years were followed. Participants answered 2 self-reported questionnaires: one between 2005 and 2008 and the other one between 2008 and 2011. The participants also underwent medical examinations and their medical history were shared. They were divided into 4 categories according to their total sleep duration: less than 6 hours, between 6 and 7.9 hours, between 8 and 9.9 hours and above 10 hours. Their findings, which were published online September 25, 2015 in journal ‘Sleep Medicines’, showed that participants who did not get at least 6 hours of sleep a night were 41 percent more likely to develop metabolic syndrome than individuals who slept between 6 and 8 hours. A total of 558 participants (21.6 percent) developed metabolic syndrome. Compared to those who slept longer, people with short sleep duration also had 30 percent increased risk of high blood sugar and excess belly fat, as well as 56 percent higher risk of high blood pressure.
One limitation of this study is that it relies on participants to accurately recall and report on their sleep habits, medical conditions and lifestyle behaviors. Data on the quality of sleep was also lacked. Nevertheless, the findings were in line with other similar studies that linked sleep deprivation to cardiovascular disease and metabolic syndrome. For instance, a paper, which was published on December 23, 2008 in the ‘Journal of the American Medical Association’, reported that the risk of developing calcium deposits in the arteries would be lower if a person can have just an extra hour of sleep a day. Calcium deposits in the coronary arteries are considered a precursor of future heart disease. It is seen as a very early marker of future risk. Another paper that was published on June 8, 2009 in the ‘Archives of Internal Medicine’ by researchers from the University of Chicago revealed that middle-aged adults who sleep too little are more likely to develop high blood pressure. Teens who have sleep deprivation will suffer from serious health consequence, too. A study that was published on October 1, 2012 in the ‘Canadian Medical Association Journal’ reported that teens that do not sleep enough are more likely to have heart disease later in their life. Sleep researchers are still not sure if it is possible to reverse the effects of inadequate sleep, though a study reported in March 2015 at the Scientific Sessions of the American College of Cardiology did indicate that a personalized coaching program that included efforts to correct disrupted sleep and more traditional interventions like diet and exercise could actually reversed elevated blood glucose levels patients with prediabetes. But to avoid the health hazards of insufficient sleep, people should ensure they have enough time for rest. Besides adequate sleep, people should also have a healthy lifestyle that include proper diet and regular physical activity.
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