We've heard getting enough sleep is important for preventing obesity, diabetes, and high blood pressure. Now, a new study says irregular sleep schedules are a factor, too.
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Every hour of variability in time going to bed and length of time you sleep was associated with a 27% increased chance for metabolic disorder.
That means lower levels of good cholesterol, higher triglycerides, a bigger waist size, and higher blood sugar.
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The changes were even greater for people doing rotating shift work or with frequent jet lag.
Study leaders say people should try for regular bed times, not just more sleep.