Your Body Clock is Associated With Mood Disorders

Koretnyk Anastasiia  Shutterstock

Koretnyk Anastasiia Shutterstock

"While our findings can't tell us about the direction of causality, they reinforce the idea that mood disorders are associated with disturbed circadian rhythms, and we provide evidence that altered rest-activity rhythms are also linked to worse subjective well-being and cognitive ability", Lyall said.

"That's not a big surprise", said Dr. Daniel Smith, professor of psychiatry at the University of Glasgow and a leading author on the study.

This study is the first to objectively measure patterns of rest and activity (using accelerometers), and to have sufficient sample size to assess the effect of circadian disruption on various mental health disorders.

He also told that a 10 pm cut-off will give the average adult time to wind down before switching off the lights and going to beauty sleep.

The findings were found to be consistent even when controlling for a number of influential factors including age, sex, lifestyle, education and body mass index, according to Smith.

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Daily circadian rhythms govern fundamental physiological and behavioural functions from body temperature to eating habits in nearly all organisms.

A disrupted body clock has been linked to an increased risk of developing mental disorders, including depression and bipolarity, in a new study.

For all participants, activity levels were measured over a seven-day period in either 2013 or 2014, and mental health proxies such as mood and cognitive functioning were measured using an online mental health questionnaire that participants filled out in 2016 or 2017.

If you're scrolling on your phone past 10pm at night, you might be heightening your risk of mood disorders.

Writing in journal The Lancet Psychiatry, Dr Aiden Doherty, senior research fellow from the University of Oxford's Nuffield Department of Population Health, said a next step could be to carry out further research on younger people.

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Previous research has identified associations between circadian disruption and poor mental health, but these were typically based on self reports of activity and sleeping patterns, had small sample sizes, or adjusted for few potential confounders. "Hopefully, that will protect a lot of people from mood disorders". Circadian rhythms occur in plants, animals and throughout biology.

The study can not say conclusively that body clock disturbances are what caused the mental risk, instead of the other way round.

"And it's likely they affect each other in a circular fashion", she added.

The researchers used the resulting information to calculate what is known as the relative amplitude.

"The circadian system changes throughout life".

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For the new study, an global team led by University of Glasgow psychologist Laura Lyall analysed data - taken from the UK Biobank, one of the most complete long-term health surveys ever done - on 91,105 people aged 37 to 73.

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