What you gain in a day by staying up late might be curtailing how long you live, according to a new study linking insufficient sleep to a lower life expectancy.

While poor sleep has been previously linked to a host of health issues and shorter lifespans, this latest investigation found that getting enough shut-eye had a stronger connection to living longer than diet and exercise – factors that are known to add years to your life.

Researchers from Oregon Health & Science University (OHSU) crunched the numbers on survey data from across the US, covering the years 2019 to 2025. Measures of life expectancy were compared against self-reported evaluations of sleep duration, with less than seven hours per night considered a threshold for insufficient sleep .

They then factored in other v

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