One study found abnormal levels of a neurochemical substance associated to sleep disorders.

Adults who suffer from primary insomnia have an abnormality that prevents a neurochemical substance to shut off the mind at night, finds a recent investigationThe researchers measured levels of gamma-aminobutyric acid (GABA) in 16 adult men and women with insomnia and 16 men and women with normal sleep patterns.

Primary Insomnia is when people find it is difficult to sleep or stay asleep at night over a period of at least a month, according to the American Academy of Sleep Medicine. Unlike most cases of insomnia, primary insomnia is not a cause psychiatric, medical or environmental. The new study found that people who suffer from primary insomnia for more than six months have GABA levels that are 30% lower. GABA, the most common inhibitory transmitter in the brain slows the overall activity in many brain areas; the investigation was filed on June 9 at the annual meeting of Associated Professional Sleep Societies in Seattle.
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