The researchers used data from the UK Biobank, conducted between 2006 and 2010 that probed risk factors for major diseases in men and women between the ages of 37 and 73, CNN reported.
The study showed that approximately 10,000 died during the study's 6½-year follow-up period, CNN reported. Researchers discovered that those who identified as "definite evening types" had a 10 percent increased risk of dying during the follow-up period compared with those who identified as "definite morning types."
The study also found that evening types were nearly twice as likely to report having a psychological illness than early birds, CNN reported.
Although the study did not look at the specific causes of death, research has suggested that night owls are more likely to develop cardiovascular disease and certain types of cancer such as prostate and breast cancer.
According to Knutson, a person's chronotype is probably a mixture of inherited and environmental factors.
"Whether or not you're a night owl is partly determined by your genes, which obviously you can't change, but it's not entirely a given," Knutson said. "I want to emphasize the gradual aspect. You can't suddenly tonight just go to bed three hours earlier. It's not going work.”