Doctors have to use their best judgment in providing care to patients. An ethical doctor will not provide care to a patient that he or she believes is more like

Doctors have to use their best judgment in providing care to patients. An ethical doctor will not provide care to a patient that he or she believes is more likely to cause harm than good. Letting patients "make their own decisions" to this extent doesn't happen in any part of medicine. If you go to the doctor and say "Hey I have really bad anxiety and I've had success with Xanax in the past to manage it" you'll get denied 95% of the time. Are doctors discriminating against people with anxiety because they don't allow them carte-blanche over the medical care provided? The answer is no - doctors know that drug dependency is a huge issue, and in most cases of anxiety, the risk of that dependency doesn't outweigh the quality of life reduction from anxiety. They will have a lot of alternative options to someone with anxiety, just like they have a lot of alternative options to someone severely overweight: lose the weight (in itself it will relief symptoms), mild exercise, steroid shots, physical rehab, anti-inflammatories, the list goes on.