This is of course a fallacy. Maybe many hear the "not your fault" when first diagnosis and cling to it. Maybe some doctors encourage them in "only me and my meds can help". I mean, I seen bloggers spewing this ****, about how healthy eating and living, friends and spiritual things don't matter, because it's all chemical imbalance, only fixable by a pill.

Also, the efficiancy of drugs is overstated, hence if the drug fails a patient, they feel they must be so flawed even the sciency drugs don't help them, when it fact the fault is in the drug.