A review of 17 studies has cast doubt on the widely held belief that depression is caused by low levels of serotonin in the brain.

Mental health: depression not linked to serotonin, study shows

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Treatment options such as medication and talking therapy play an important role in helping many people with depression and can significantly improve people’s lives

Stylist Daily

A new study has cast doubt on the widely believed ‘serotonin hypothesis’. 

Mental health: is depression caused by low serotonin levels in the brain? A new study says no