How Long You Sleep May Be In Your Genes

By Agata Blaszczak-Boxe, Contributing Writer
Published: 12/04/2014 10:34 AM EST on LiveScience

The amount of time people spend sleeping is linked with two regions of their DNA, a new study suggests.

In the study, researchers examined data from more than 47,000 people of European ancestry who were participating in ongoing studies in Europe, the United States and Australia, and nearly 5,000 African-Americans. The researchers compared people’s genetic information with how long they reported sleeping on an average night.

The results revealed two regions of DNA that might be related to how long a person usually sleeps.

The first of the two regions was associated with longer-than-average sleeping times, the new study showed. In previous research, this region has also been linked with better glucose metabolism and a lower likelihood of attention deficit hyperactivity disorder. The other region was associated with shorter-than-average sleeping times, and previous studies had linked it with an increased risk of depression and schizophrenia.

“Sleep patterns are influenced by genetic differences,” said study author Dr. Daniel Gottlieb, the director of the Sleep Disorders Center at VA Boston Healthcare System. “This study is one of the first to begin identifying these genetic —> Read More Here


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