This psychiatrist spouting off the "serotonin imbalance" marketing speak from big pharma like it's science is frightening. This has actually never been proven to exist, which is why every ad for SSRIs states "the way this drug is believed to work is...".
And then there's all the terrible side effects they never tell you about before you start taking them, and the fact you likely won't be able to stop using them without horrible withdrawal symptoms...
So much about psychiatry is still more akin to shamanism than actual science and medicine it's frightening.