I think that's a very wrong way of thinking about it. Mental illness is illness and ultimately will always have a physical cause. My more optimistic take is tha

I think that's a very wrong way of thinking about it. Mental illness is illness and ultimately will always have a physical cause. My more optimistic take is that this will lead to us better understanding how things like pathogens and environmental factors can cause syndromes that manifest as mental illness. Which is to say this could be both depression and long covid and the two could be intertwined. And it may lead us to looking at how influenza or air pollution or cell phone radiation or whatever else is causing depression symptoms. I say this as someone who was in the same boat for a while. I was suffering persistent fatigue, malaise, anxiety, sleep disruptions. The kind of thing frequently diagnosed as depression. Only I eventually graduated to a specific enough symptom to get a diagnosis of specific physiological cause. A disease that was only positively attributed to specific neurological malfunction 20 years ago and one that is very difficult to test for directly. In reality, I _was_ depressed by the "quacks like a duck" theory of disease. That doesn't mean I didn't have a treatable illness no different than heartburn or cancer. It's only a matter of time (maybe a lot of time) before we really can "cure" most forms of depression.