Article: Sleep just a dream for weary masses.(Main)

Byline: LAURAN NEERGAARD Associated Press

WASHINGTON - Millions of Americans lie awake at night counting sheep - or have a stiff drink or pop an allergy pill, hoping it will make them drowsy. But experts agree all that self-medicat ing is a bad idea, and the causes of chronic insomnia remain mysterious.

Almost a third of adults have trouble sleeping, and about 10 percent have symptoms of daytime impairment that signal true insomnia. Sufferers readily cite the resulting problems: walking around in a fog, as memory and other cognitive functions slow. Dozing off at the wheel or at work. Depression. Lack of energy.

But for all the complaints, scientists know ...

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