Expatriate health insurance customers might be interested to learn that the amount of sleep people have can affect their mental health and attitude.
According to research revealed at the 25th Anniversary Meeting of the Associated Professional Sleep Societies, people who have between six and nine hours of sleep reported the best scores for life quality.
They are also less likely to experience depression when compared with people who slept for less or for longer.
Principal investigator Dr Charles Bae, neurologist at the Cleveland Clinic Sleep Disorders Center in Ohio, commented: "These results are important because they provide more information about the importance of getting enough sleep, which is usually six to nine hours per night.
"People may already expect that their quality of life could be decreased when they do not get enough sleep, but they may not realize that sleeping too much can also have a negative impact."