(HealthDay News) — Insomnia — the inability to fall asleep or stay asleep — affects more women than men, and older people more than younger ones.
The U.S. National Heart, Lung, and Blood Institute says people at increased risk for insomnia include those who:
- Are stressed.
 - Are depressed or have emotional health issues, such as those going through divorce or the death of a spouse.
 - Have lower incomes.
 - Work at night or have frequent changes in work hours.
 - Travel across time zones.
 - Don’t exercise regularly.
 
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