[ethanol-brain]

A lot of disease has environmental and intrinsic causes.

Categorizing disease as having a set of characteristics in the body doesn't make it solely rooted within those characteristics.

I think there will always be a desire to solve disease with a single pharmaceutical, as that would be an incredible thing. However the existence of drugs that do not work for everyone doesn't necessitate that the signals for characterizing disease are off or that a pharmaceutical isn't useful to some people.

Organisms are incredibly complex, even those composed of relatively few cells. Thinking there is always some magic bullet to address a biological or emergent phenomenon is probably not the answer, but neither is being dismissive of treatments that don't meet that criteria.