I'm about half finished with the book. I am most definitely manic depressive so I am wondering what his opinion on that is. There's no harm in considering anything he says regarding depression as long as you don't suddenly discontinue your medicine or something.
A lot of his points aren't really hard to swallow or even all that novel honestly on their surface and, other than his opinion on anti depressants, I don't know why anyone would not want to consider them in a holistic approach to treatment. Talk therapy is usually advised in conjunction with meds by anyone who knows how to prescribe what they're prescribing.
Psychology is the economics of medicine. "It's science. Trust us. We just deal in very unpredictable territory so we're attempting the impossible."