People are concerned that they are not getting enough sleep. They know that it can lead to certain health conditions such as fatigue, low immunity and even depression. Two new studies suggest that not only getting too little sleep can affect your depression risk. Too much shuteye may also be a factor.
Findings from recent studies indicate that inappropriate amounts of sleep may trigger certain genes associated with depression. Researchers from the University of Pennsylvania, University of Texas at Austin and the University of Washington conducted one study, which involved observing more than 1,700 same-sex adult twins who were part of the University of Washington Twin Registry. The participants reported their usual duration of sleep as well as any symptoms associated with depression.
While there is no specific number of sleep hours recommended for people each night, most adults require from seven to nine hours of sleep each night to feel rested. Teenagers require between 8.5 and 9.5 hours of sleep each night, according to the National Sleep Foundation.
The researchers found out that participants who slept an average of 7 to 8.9 hours a night had a 27 percent heritability of depressive symptoms. Participants who slept fewer than seven hours a night showed a 53 percent heritability of depressive symptoms. Surprisingly, those who slept for more than nine hours every night showed a 49 percent heritability rate.
Another study, which was conducted by University of Texas Health Science Center and the Centers for Disease Control in Vietnam researchers, looked into the sleep duration and depression risk among adolescents. Participants in the said study involved more than 4,100 11-to17-year old kids living in the Houston area. The study showed that regular lack of sleep among young people was predictive of depression. However, they did not find out whether the depressive symptoms resulted in sleep deprivation. But what these two studies suggest is that the quantity of sleep is indicative of depression risk. Whether it may be too much or too little sleep, people may experience an increased risk of depression. This is where getting enough sleep regularly may help in preventing people from becoming more likely to develop depression over the years. The results of the two studies are published in the journal Sleep.
Source: Huffington Post