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Even one hour of exercise per week could prevent depression

03/10/2017

Even one hour of exercise per week could prevent depression

Depression affects around 6.7% of US adults every year. On a global level, the World Health Organization (WHO) estimates that more than 300 million people are currently living with the disorder.


When it comes to treatment, medication, psychotherapy, cognitive behavioural therapy or a combination of these approaches is usually used.


But new research adds weight to the argument for regular exercise as a depression treatment.


Australia-based non-profit group Black Dog Institute conducted an analysis of data collected from 33,908 Norwegian adults who were followed over an 11-year period.


Publishing their results in the American Journal of Psychiatry, the team, led by Prof. Samuel Harvey from the Black Dog Institute, found that not only does a little exercise bring substantial benefits, but a lack of exercise actually contributes to depression.


Individuals who didn’t undertake any physical activity were found to be 44% more likely to develop depression than those who did just 1 or 2 hours per week.


As a result, the authors concluded that approximately 12% of depression cases could have been prevented if the individual did at least 1 hour of exercise per week.


"We've known for some time that exercise has a role to play in treating symptoms of depression, but this is the first time we have been able to quantify the preventive potential of physical activity in terms of reducing future levels of depression,” said Prof. Harvey.

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