But the study should still be a wake-up call for night owls, who may want to take extra efforts to maintain a healthy lifestyle, she said.
Prof Malcolm von Schantz, at the Guildford university, said: "This is a public health issue". "Mortality risk in evening types may be due to behavioural, psychological and physiological risk factors, many of which may be attributable to chronic misalignment between internal physiological timing and externally imposed timing of work and social activities". Teenagers tend to naturally have later chronotypes (body clocks shift throughout life and most teens are night owls), and a growing body of research has shown that shifting school start times later improves school performance.
"You're not doomed", Knutson said. Getting too little sleep is also known to have negative health effects, but the new study found little difference between the self-reported sleep of morning people and that of evening people, the researchers said. Zeitzer, who was not involved in this study, said that "the findings for the mortality actually weren't as robust as I would have hoped". Earlier studies have already found higher rates of metabolic problems and cardiovascular diseases in people who are active at night. Make work shifts match peoples' chronotypes.
But don't worry if you're a night owl with a job that requires you to rise early.
Most people can change their chronotype to at least some extent, especially if they are careful about light exposure, otherwise we'd never be able to adjust to a new time zone. This was in comparison with the people identifying as "definite morning types". "Part of it you don't have any control over, and part of it you might".
Trumps, Obamas and May not invited to royal wedding
Perhaps the saddest part of all of this is that we won't get to see any of President Obama's dance moves at the royal reception. Since the bride comes from an American background, there were possibilities of former president Barack Obama being present.
Nigeria Climb Five Spots On FIFA Ranking
Germany and Brazil hold on to their places as the first and second placed teams, respectively, while Belgium rose to No. 3. Tunisia have replaced Senegal at the top of the pile in Africa, with DR Congo, Morocco and Egypt completing the top five.