Eli5: why is there no test for the “chemical imbalance” that is often mentioned for depression?
In: Chemistry
I think a major point here is that it’s a lot of guesswork treating depression and other mental issues. This is seriously a huge gray area with a lot of unknowns. Hard to test for something when you aren’t even sure how it works. Some will say mechanism unknown. About all they know sometimes is that it works for some people. Testing on humans is hard.
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