Researchers Uncover Why Poor Sleep Is Making Americans Ill

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A groundbreaking new research indicates that ongoing lack of sleep — getting less than six hours nightly — increases the likelihood of heart disease by 48 percent, boosts the chance of developing type 2 diabetes by 36 percent, and considerably heightens the risk of cancer. The CDC identifies sleep deprivation as a public health crisis impacting more than a third of adults in the United States. This process is linked to elevated cortisol levels that lead to widespread inflammation.

Transcript

00:00A comprehensive new study is confirming what sleep researchers have warned for a decade.

00:05Americans are not just tired.

00:07They are getting physically sicker because of it.

00:10Sleep deprivation is now classified as a public health epidemic by the CDC,

00:15with more than a third of U.S. adults regularly sleeping less than seven hours per night.

00:20What the new research reveals goes beyond fatigue.

00:23Chronic short sleep defined as less than six hours per night

00:26for extended periods is linked to a 48% higher risk of heart disease,

00:31a 36% higher risk of type 2 diabetes,

00:35impaired immune function,

00:37accelerated brain aging,

00:38and significantly elevated cancer risk.

00:41The research identifies a cascade mechanism.

00:45Insufficient sleep elevates cortisol,

00:47which triggers systemic inflammation,

00:50which damages blood vessels,

00:52weakens immune cells,

00:53and accelerates cellular aging.

00:55Modern American life is structurally incompatible

00:58with adequate sleep screens,

01:00irregular work schedules,

01:01stress,

01:02and artificial lighting

01:04all suppress the body's natural sleep architecture.

01:07The most dangerous part

01:08is that chronically sleep-deprived people

01:11adapt to feeling tired,

01:12losing their ability to accurately assess

01:15how impaired they actually are.

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