The chemical imbalance explanation is... wanting. My response typically is, "Which chemical is out of balance? Phlegm, blood, yellow bile, or black bile?" The c

The chemical imbalance explanation is... wanting. My response typically is, "Which chemical is out of balance? Phlegm, blood, yellow bile, or black bile?" The chemical imbalance explanation has been used for centuries as a crutch when we don't know what's going on.