Daniela Krause: The first innovations in the field of mental health conditions date back to the beginning of the 20th century. Psychotherapy was the first form of care to take patients seriously, and they were no longer written off as insane like in previous centuries. In the 1930s, the therapeutic spectrum was expanded significantly, and new forms of treatment became available to people with mental health conditions, including artificial fever therapy (therapeutic malaria), insulin coma therapy (injection of a large dose of insulin) or electroshock therapy (triggering of an epileptic attack). Ever since Deutscher Ärztetag, the German Physicians' Congress, discussed the field of psychiatry for the first time in 1970, there has been a fundamental change of attitude. From a medical point of view, psychoses, anxiety disorders and depression are nowadays considered regular diseases with biological causes. We are just beginning to understand how to diagnose them at a cellular level. After all, psychiatric conditions – unlike other fields of medicine – cannot be diagnosed by means of blood tests or X rays.