All those late nights may lead to a short life.

In a study published on Thursday, April 12 in Chronobiology International, researchers studied about half a million adults in the U.K.

It took place over a course of six and a half years.

Researchers from University of Surrey and Northwestern University identified who is considered a “definite evening type” compared to people who are “definite morning types.”

Night-time people are more likely to have issues like respiratory disorders, psychological and neurological disorders and diabetes.

Leading author of the study, Kristen Knutson, said while studies have examined what health issues night owls face, this is the first to look at mortality.

It concluded that evening people have a 10 percent chance of dying at an earlier age than morning people.

The researchers plan to hold future studies to look at if people’s health improves with earlier schedules.