Insomnia sufferers should rest easy as the largest ever study into the lack of sleep found it does not cause an early death.
A review of more than 36 million people revealed there is no evidence struggling to nod off or waking in the night affects mortality.
But a critic argues that while the majority may be able to cope with a few sleepless nights, for some the health consequences can be devastating.
In the first review of its kind, researchers from Flinders University, Adelaide, analysed 17 studies investigating a possible link between insomnia and mortality.
The studies were carried out all over the world for an average of 11 years. Most were made up of patients who self-reported insomnia, while some were officially diagnosed. Read more