Anxiety and depression (grouped together by the term 'psychiatric distress') often predicts insomnia symptoms, and vice-versa.
An interesting study out of the UK looked to determine whether there really is a link between psychiatric distress and insomnia symptoms based on gender and social class.
999 individuals were followed for 20 years, with the average age range of participants being 36-57 years of age.
Researchers found that those in a manual social class were more likely to experience insomnia compared to those in non-manual occupations. These individuals also exhibited higher rates of psychiatric distress.
Women (especially those in a manual social class) were found to be more likely to experience patterns of psychiatric distress and insomnia in middle age than men.
The study concluded there is a strong association between socioeconomic disadvantage and chronic insomnia symptoms and psychiatric distress - particularly among women.
Source: BMC Psychiatry
Last updated: October 10, 2014