Study: preferring nocturnal risk of dying early
An international team of scientists from the UK and the United States completed a large-scale study of human chronotype that lasted for 6, 5 years old, and came to the conclusion that the people - "owls" risk of dying before their metered biological life. About his work, the researchers have shared in the specialized journal Chronobiology International.
"People are nocturnal against their will, but because of the nature of the psyche and physiology. Our task - to help people to adapt to life and resorting to preventive measures to take care of their health, "- says one of the study co-author Kristen Knutson of Northwestern University (USA).
"Perhaps, our study confirms that the" owls "have their own biological clock, the course does not coincide with the time out of their consciousness," - adds the researcher, noting that because of the chronic lack of sleep from the "owls" significantly more likely to undermine its health, compared with the "larks".
"Later, going to sleep and waking - a problem whose existence society can not ignore," - says Professor Chronobiology at the University of Surrey Malcolm Shantts background.
In a large-scale study involved more than half a million volunteers from England, aged 38 to 73 years. For the analysis of data on sex, race, were collected, body mass index, smoking and the presence of diseases of participants, as well as how many hours a day they sleep.
The findings show that the risk of early death in "owls" 10 percent higher than that of people who adhere to the natural order of alternation of waking and sleeping.
Traditionally, there are three types of human chronotype, among them: "Owl", "bird" and "dove". People whose chronotype corresponds to "lark" or "blue", usually do not have problems with the morning awakening and alertness during the day. "Owls" is constantly prevents drowsiness.
Activity in the modern world no longer aligned to the "Lark": working and school day begins early enough, which makes some tasks more difficult for "owls". Constant lack of sleep caused by the need to get up early, leads to the appearance of so-called "social jet lag". Recently, for example, scientists have found that due to the early start of classes at the universities of those who prefer to do more evening and night life, we obtain worse. In this case, "owls" are considered to be more social, as compared to those who used to get up before dawn. The latter, in turn, prefer generally only communicate with friends. The need to adapt to the Morning-day activities can have a negative impact on health and "owls". In the report, scientists note that "owls", according to information received, the most susceptible to cardiovascular disease (heart attacks, strokes, heart failure), endocrine disorders (diabetes, dysfunction of major endocrine glands).
Nocturnal and provokes the development of diseases of the gastrointestinal tract, lung disorders and mental disorders, according to the results of the study.
The researchers note that their work is the first large-scale study of the relationship between man and chronotype risk of death from a variety of natural causes. In the future, more research is needed, which can help determine the physiological reasons for this connection.