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.

(http://gupea.ub.gu.se/handle/2077/28245; https://www.sciencedaily.com/releases/2012/06/120611134233.htm)