What causes depression? Not low serotonin levels, science says - DW (English)

Low serotonin levels in the brain are commonly thought to cause depression. But science shows the neurotransmitter has little to do with it. What gives?

You've probably heard about the chemical imbalance theory of depression. It states that depression is caused by low levels of the neurotransmitter serotonin, also known as 5-HT, in the brain. There a… [+5935 chars]

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