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Defying body clock associated with depression, lower wellbeing: Study

People whose sleep pattern goes against their natural body clock are more likely to have depression and lower levels of wellbeing, according to a new study

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Depression | Sleep disorders | Mental health

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Defying body clock associated with depression, lower wellbeing: Study

People whose sleep pattern goes against their natural body clock are more likely to have and lower levels of wellbeing, according to a new study.

The research, led by the University of Exeter, was published in the journal 'Molecular Psychiatry'.

The study also found the most robust evidence to date that being genetically programmed to be an early riser is protective against major depression, and improves wellbeing.

Researchers suggested this may be because society is set up to be more aligned to early risers, through the standard 9-5 working pattern.

COVID-19 has led to more flexible working patterns and this research may help make the case for more adaptable working habits to suit individuals' needs.

The team built on previous research which mapped 351 genes linked to being an early riser, or a night owl. They used a statistical process called Mendelian Randomisation to examine whether these genes were causally associated with seven and wellbeing outcomes, including major depression, using data on more than 450,000 UK adults from UK Biobank's biomedical database and research resource.

As well as the genetic information, participants also completed a questionnaire on whether they were a morning person or an evening person.

The team also developed a new measure of "social jetlag" that measures the variation in sleep patterns between work and free days. They measured this in more than 85,000 UK Biobank participants for whom sleep data was available, via wrist-worn activity monitors.

They found that people who were more misaligned from their natural body clock were more likely to report and anxiety and have lower well-being.

Lead author Jessica O'Loughlin, of the University of Exeter, said, "We found that people who were misaligned from their natural body clock were more likely to report depression, anxiety and have lower wellbeing. We also found the most robust evidence yet that being a morning person is protective of and improves wellbeing."

O'Loughlin added, "We think this could be explained by the fact that the demands of society mean night owls are more likely to defy their natural body clocks, by having to wake up early for work."

Overall, the research team found that morning people were more likely to be aligned to their natural body clock.

They then tested the effect by looking at shift workers and found that morningness may not be protective for depression in shift workers, meaning morning people who work shifts may not have improved and wellbeing, however, this was inconclusive.

Senior author Dr Jessica Tyrrell, of the University of Exeter, commented, "The COVID-19 pandemic has introduced a new flexibility in working patterns for many people. Our research indicates that aligning working schedules to an individual's natural body clock may improve and wellbeing in night owls.

(Only the headline and picture of this report may have been reworked by the Business Standard staff; the rest of the content is auto-generated from a syndicated feed.)

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First Published: Tue, June 08 2021. 11:34 IST