How is it determined that depression is due to a chemical imbalance when it’s, for the most part, clearly external circumstances that lead to it?

Question

Say, a loved one has passed away, which results in depression…does the chemical imbalance come after the fact, what triggers the imbalance, and why is it blamed for the depression, and not the passing away of the loved one?

In: 0

Answer 1

There’s a difference between the subjective experience of feeling/being depressed and the clinical diagnostic criteria of various depression conditions.