How common are sleep disorders?

Sleep problems affect 70 percent of Americans, up from 60 percent in 1990. A sleep disorder is defined as having a problem sleeping or not feeling rested at least a few nights per week. And that's enough to chip away at your health—and longevity.

The good thing, however, is that 50 percent of people with sleep disorders can be helped by simple behavioral changes that you make by yourself—to your bed, to your body, and to your life.

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