[simongray]

The current mainstream view is that depression is partly physical, so you're not wrong.

(edited for clarity) Some say that depression is a chemical imbalance, but this is not a mainstream view any longer (I think, although it's often mentioned in comments on the Internet), although treatment is still very much based on chemicals like SSRI drugs, which have very little proven effect, require constant upping of dosages to gain the small effect they provide, and also having several undesirable side-effects.

[ianai]

I did not equate the two.

[simongray]

I did not say you did, sorry if it seemed that way, but others further up this tread are indeed saying that.