Viennese doctor Manfred Sakel developed insulin-coma therapy in 1927. Apparently not a particularly careful doctor, he accidently gave one of his patients an insulin overdose, resulting in her falling into a coma. The patient, who was a morphine addict, awoke from her coma and discovered that her addiction had disappeared. Sakel, being the bad doctor he was, made the same mistake with another patient who also awoke addiction-free. Sensing a trend, Sakel began intentionally inducing insulin comas to schizophrenics and other patients, and 90% of them reportedly were cured. It is unknown why or even if these claims were true, but thankfully the insulin-coma therapy eventually faded away by the 1960s. A good thing, since it was a dangerous therapy and 2% of the patients weren’t cured, they died.