Sara Thomée, doctoral student at the University of Gothenburg’s Sahlgrenska Academy and colleagues conducted four studies to evaluate the effects of heavy computer and cell phone by young adults on sleep quality, stress levels, and general mental health. The studies found that young adults who make particularly heavy use of mobile phones and computers run a greater risk of sleep disturbances, stress, and symptoms of mental health. Heavy use of mobile phones was linked to an increase in sleeping problems in males and an increase in depressive symptoms in both males and females. (University of Gothenburg. "Intensive mobile phone use affects young people's sleep." ScienceDaily. ScienceDaily, 11 June 2012.  Accessed 7-16 <>)

Studies by Sara Thomée, doctoral student, and colleagues at the University of Gothenburg’s Sahlgrenska Academy have shown links between frequent computer use without breaks and late at night and health problems. For example:

  • Frequent computer use without breaks was found to increase the risk of stress, sleeping problems, and depressive symptoms in women
  • Males who use computers extensively without breaks were more likely to develop sleeping problems.

Regularly using a computer late at night was associated not only with sleep disorders but also with stress and depressive symptoms in both men and women. ( Accessed 7-16)