They prescribe you a drug that does not cure mental illness, that you have to take your entire life, On top of that they make you obese, so you have to take another drug to help you lose weight.
Then the patient has to go through a long and arduous behavioural program to change their life style and eating habits, caused by the drugs in the first place,
The wonderful pharma industry.
High risk of weight gain anti-depressant drugs:
Amitriptyline, citalopram, clomipramine, fluvoxamine, mirtazapine, nortriptyline, paroxetine, phenelzine.
I have seen this over many years in secure psychiatric wards, with those who take antipsychotics.
Drugs do not "cure" mental illnesses. There is no chemical imbalance.
The drugs are either; chemical coshes or highly advertised and ineffective placebo.
The drugs are also effective in controlling some symptoms and enable people to go on with their life.
We had many centuries without those drugs, I don't think our ancestors had any better quality of life without those meds.
Psychiatric illness is complex and multiple techniques need to be employed to get some control over it.
If we are looking for a silver bullet, I agree there is none.