One study out of Australia found that men over the age of 65 who found it difficult to fall asleep were twice as likely to develop depression compared to healthy sleepers.
Of the 5,127 men who took part in the study, almost two thirds reported poor sleep quality, nearly a fifth said they found it hard to fall asleep and 10% stayed awake during the night.
The results of this study cannot be explained by reverse causality (that depression causes insomnia) - and this surprised researchers.
In fact, they were so surprised by this, they're now arguing that further research into the link between sleep and depression needs to become an international priority.
(You won't hear any complaints from me on that front.)
Perhaps of even more concern, researchers suspect that the use of sleeping pills may be driving the increase in rates of depression.
Depression is not a normal part of aging. Improve your sleep by practicing good sleep hygiene and getting enough exercise (yoga can be particularly beneficial).
Source: Science Direct
Last updated: September 24, 2013