Psychosocial factors
One of the most consistent findings in the literature is the association between psychosocial
factors and incidence and persistence of insomnia. The huge changes in the demography
and economy that occurred mainly in the last decades worldwide have a parallel in the
people’s lifestyle, the way people interact in their work, family disruption, lack of social
support, among others. These changes have been implicated to the high levels of stress and
sleep problems found in the studies in this area.