2025) Chemical Imbalance Theory: it’s the myth that never dies, clearly, as I have to keep on updating this post! Every couple of years there is a big news cycle which expresses with surprise and dismay that the chemical imbalance theory is wrong! Oh my! It's wrong. Every couple of years. For some reason this is news that never sticks. It's been going on for the 20 plus years I've been keeping an eye on it and it will likely continue like this. The pharmaceutical companies appear to have more sway.