What is the Cause of Depression? | NBC4 Washington

In the last couple of decades, many health experts have said that depression occurs due to a deficiency of a brain chemical or chemicals, and that antidepressants work by correcting that imbalance. A recent study suggests there is no evidence that low levels of serotonin cause depression. Psychiatrist Dr. Joshua Weiner joins News4’s Eun Yang to discuss the ramifications of the findings.
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