Sleeping less than six hours a night skews activity of hundreds of genes

http://www.guardian.co.uk/science/2013/feb/25/sleeping-six-hours-night-activity-genes

In the article "Sleeping less than six hours a night skews activity of hundreds of genes", Ian Sample talks about what getting 6 hours or less of sleep can do to you. He made it clear through this quote "Getting too little sleep for several nights in a row disrupts hundreds of genes that are essential for good health, including those linked to stress and fighting disease" about how serious this could be. Some other problems could be "Substantial changes in the activity of genes that govern the immune system, metabolism, sleep and wake cycles, and the body's response to stress." This is the reason why when you don't get enough sleep you can get sick. This could be a concern for many people, but after a few nights of better rest, the genes returned to their normal levels of activity.