Aging isn’t always responsible for declines in mental function. In fact, some researchers believe simple genetics could play an even bigger role.
If you’ve ever wondered why some people can get by on just a few hours of sleep while others need much more, scientists may have found an answer.
Research conducted on 4,000 Europeans discovered that those who had two copies of a particular variant of a gene called ABCC9, which influences sleep duration, generally reported sleeping less than those who had two copies of a different version of the g