Less screen time and more sleep critical for preventing depression

screen time
Credit: Unsplash/CC0 Public Domain

A cross-sectional and longitudinal analysis of data from the UK Biobank, involving almost 85,000 people, has found that lifestyle factors such as less screen time, adequate sleep, a better-quality diet, and physical activity strongly impact depression.

With evolving data exploring the link between depression and lifestyle factors, the international research team led by Western Sydney University say their findings published today in BMC Medicine may help inform public health policy.

The study found:

  • A between physical activity, healthy diet, and optimal sleep (7-9 hours) was associated with less frequency of .
  • Screen time and tobacco smoking were also significantly associated with higher frequency of depressed mood.
  • Over time, the lifestyle factors which were protective of depressed mood in both individuals with and those without a depressive disorder was optimal sleep (7-9 hours) and lower screen time, while a better-quality diet was indicated to be protective of depressed mood in those without depression
  • A higher frequency of alcohol consumption was surprisingly associated with reduced frequency of depressed mood in people with depression. This may potentially be due to the self-medicating use of alcohol by those with depression to manage their mood.

"The research is the first assessment of such a broad range of and its effect on depression symptoms using the large UK Biobank lifestyle and mood dataset," said lead co-author, Professor Jerome Sarris, NICM Health Research Institute, Western Sydney University.

"While people usually know that physical activity is important for mood, we now have additional data showing that and less screen time is also critical to reduce depression.

"The findings also suggest that one's dietary pattern is partly implicated in the germination or exacerbation of depressed mood.

"The results may inform by further highlighting the important relationship between people being encouraged and supported to engage in a range of health-promoting activities. In particular, maintaining optimal sleep and lessening screen time (which is often an issue in youth), while having adequate and good dietary quality, may reduce the symptoms of depression," said Professor Sarris.

The authors' research also supports the use of a personalised, combined lifestyle interventions to help manage mood and promote physical wellness. This is in alignment with their recent World Psychiatry paper, led by senior author Dr Joseph Firth, a UKRI Future Leaders Fellow, from The University of Manchester, and Adjunct at NICM Health Research Institute, Western Sydney University.

More information: Jerome Sarris et al, Multiple lifestyle factors and depressed mood: a cross-sectional and longitudinal analysis of the UK Biobank (N = 84,860), BMC Medicine (2020). DOI: 10.1186/s12916-020-01813-5

Joseph Firth et al. A meta‐review of "lifestyle psychiatry": the role of exercise, smoking, diet and sleep in the prevention and treatment of mental disorders, World Psychiatry (2020). DOI: 10.1002/wps.20773

Journal information: BMC Medicine
Citation: Less screen time and more sleep critical for preventing depression (2020, November 12) retrieved 18 April 2024 from https://medicalxpress.com/news/2020-11-screen-critical-depression.html
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