Personally my feeling is that chemical imbalance is the symptom not the cure. It takes a very mature society to practice preventative medicine. We clearly aren'

Personally my feeling is that chemical imbalance is the symptom not the cure. It takes a very mature society to practice preventative medicine. We clearly aren't that society (look at the obesity epidemic). I'm sure that people who are mentally unwell have a chemical imbalance, that doesn't mean it isn't caused by diet, environment or simply their human experience constantly training them to be a in a particular state.