Depression is a symptom, not exactly an illness. I mean we often treat it like one-- and call that Major Depressive Disorder-- but I expect in the future we'll

Depression is a symptom, not exactly an illness. I mean we often treat it like one-- and call that Major Depressive Disorder-- but I expect in the future we'll be able to break it down to 'inflammatory disorder causing symptoms of depression', 'trauma disorder leading to symptoms of depression', etc