We already have a good idea of how much insomnia costs businesses each year - but up to now, we've not had a good idea of how much it costs individuals.
Researchers have set out to try to determine just how much insomnia costs on an individual level.
The study examined a random selection of 948 adults from Quebec, Canada.
Each participant answered questions on their sleep, overall health, use of healthcare services, absences from work, accidents and work productivity.
For those with insomnia, the annual cost was $5,010.
For those with insomnia symptoms but no diagnosis, the annual cost was $1,431.
For those who slept well, there was still an annual cost - $421.
Insomnia can be treated relatively inexpensively - and as studies like this show, treating insomnia will always be far more cost effective than ignoring the condition.
Last updated: May 15, 2013