At what point does an extreme mental health disorder become untreatable? And must doctors continue to treat those patients, even against their will? Katie Engelhart examines these questions in an in-depth look at how some psychologists are turning to palliative care for anorexia patients who are done fighting their conditions, while other doctors find the approach professionally unethical. (Palliative care, which began with dying cancer patients, focuses on relieving suffering rather than treating the ailment.) And while you’re sifting through the arguments for and against palliative psycholog…