Scientists: Sleep loss changes genes

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Scientists have discovered a new clue that could help explain why wakeful nights may lead to a variety of illnesses.

A new study finds that just a week of inadequate sleep can alter the activity of hundreds of genes.

Not all the altered genes have known functions, but some are involved in metabolism and stress response.

More than one-third of Americans sleep fewer than seven hours a night.

When people don`t get enough sleep, have poor quality rest or sleep at the wrong times of day, they’re at higher risk of heart disease, kidney disease, high blood pressure, obesity, diabetes and depression.

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