A research abstract presented at SLEEP 2011, the 25th Anniversary Meeting of the Associated Professional Sleep Societies in Minneapolis, suggests that those who receive between six and nine hours of sleep per night have less depression and higher ratings for quality of life than those who sleep fewer or more hours.
Led by Dr. Charles Bae, neurologist at the Cleveland Clinic Sleep Disorders Center in Ohio, the abstract involved the data analysis of 10,654 patient records collected from January 2008 to May 2010. The subjects, around 52 years of age, were assessed for quality of life using the EQ-5D questionnaire, a nine-item questionnaire used to determine patient health issues, such as depression. Researchers took into account age, race, gender, marital status, and even multiple health care visits, defining short sleep as less than 6 hours per night, and long sleep as over 9 hours per night.
Results of the analysis showed that those who slept anywhere between 6 and 9 hours per night were more apt to have a better quality of life and less depressive tendencies than others; and those who reported being in good health were even more likely to have a better life and less depression than those who received much less or more sleep. Findings also showed that patients who received less than 6 hours of sleep or more than 9 hours of sleep experienced a similar rise in depression symptoms and fall of life quality.
The Importance of Quality Sleep
Health care professionals suggest that adults and children should receive between 7 and 8 hours of complete sleep to stay fit and healthy in both body and mind. Those who receive less or more sleep can experience depression, anxiety, and even more severe health problems, such as heart attacks and possibly an early onset of diabetes.
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