As is known, good health depends upon enough sleep. Now there is new scientific evidence to support this view.
German researchers found that, in a group of volunteers carried out a HAV (hepatitis A virus) immunization, the one who have enough sleep have much stronger response to the vaccine than others. The researchers say the phenomenon shows that, compared with people who don’t have enough sleep, the immune system of ones who have enough sleep has stronger ability to respond for the invasion of the virus. Like other vaccines, hepatitis A vaccine is a kind of inactivated virus exposed to the immune system, the aim of which is to induce the body to produce anti-viral antibodies, so that the body can effectively resist attacks of the real virus. The body’s response to the vaccine could be used as a model that can be used to detect the body’s resistance of immune system to resist virus infection.
In the latest study, Jan Born and his colleagues injected 19 males and 28 females with the hepatitis A vaccine, and then continued to test the levels of hepatitis A antibodies in their blood in the subsequent 28 days. Half of the tested persons were allowed sleeping adequately in the night, and the remaining others have not had any sleep at night. Four weeks later, the antibody level of those people who sleep enough was twice as high as the ones of people who have a lack of sleep. “In the experiment, we were surprised to find that only one night lack sleep, the antibody titers had reduced.” researcher Born from Luebeck University said. He added that, in any case, those people who have lack of sleep are still able to generate sufficient response to the vaccine.
The finding was published in the magazine called “Psychosomatic Medicine” in September/October.
According to Born’s study, there’s such an assumption that hormonal changes when people are sleeping may help to boost up the functions of immune system. He stressed that sleep will promote the secretion of prolactin and growth hormone; it has been proven that the two kinds of hormones could enhance immunity.
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