Researchers found that "night owls" have a 10% greater risk of early death than those who find it easy to get up and get going in the morning.
Previous studies in this field have focused on the higher rates of metabolic dysfunction and cardiovascular disease, but this is the first to look at mortality risk.
The study is published today (April 12) in the journal Chronobiology International. Their risk for respiratory disease was 23 percent higher and for gastrointestinal disease 22 percent higher.
'We should discuss allowing evening types to start and finish work later, where practical.More news: Khloe Kardashian is Reportedly Having "Early Contractions" as We Speak
She went on to reveal that "It could be psychological stress, eating at the wrong time for the body, not exercising enough, not sleeping enough, being awake at night by yourself, maybe drug or alcohol use".
'There are a whole variety of unhealthy behaviours related to being up late in the dark by yourself'. Night owls were almost twice as likely as early risers to have a psychological disorder and 30 percent more likely to have diabetes.
Genes and environment play an equal role in our body clocks.
Professor Knutson said that we are not "doomed" by our biology as even if we are a definite night owl or early bird, there are things that we can change to benefit our health, such as getting more flexibile working hours. Part of it you don't have any control over and part you might.
Knutson said night owls could improve their chances of living longer by ensuring their were exposed to light early in the morning but not at night. Lack of enough sleep at night didn't help matters either.More news: Knicks dismiss Jeff Hornacek; candidates include David Fizdale, David Blatt, Mark Jackson
"If we can recognize these chronotypes are‚ in part‚ genetically determined and not just a character flaw‚ jobs and work hours could have more flexibility for owls‚" she said.
"They shouldn't be forced to get up for an 8 a.m. shift. Some people may be better suited to night shifts".
A survey of more than 430,000 people in Britain found that night owls had a 10-percent higher risk of dying in the 6.5-year study period than "larks".
Those behind the research said society needed to wake up to the difficulties faced by night owls and called on employers to be more flexible towards staff who suffer when forced to clock in early. "Then we'll see if we get improvements in blood pressure and overall health", she said. 35 percent as "more a morning person than an evening person", 28 percent as "more an evening than morning person" and 9 percent as "definitely an evening person".
Professor von Schantz said pushing the clocks forward in countries that adopt daylight saving time - such as British Summer Time - has negative health effects.More news: Woman attacks 2 people after dog eats her marijuana