Having passed his Matura exams, he began the study of law at the University of Vienna, where he became a member of the Jewish Kadimah student association.

He wrote numerous light satires, sketches, poems, and lyrics but also contributed to several newspapers, often under the pen name "Beda", a shortened version of his Czech first name, Bedřich (Frederick).

On 1 April 1938, almost immediately after the Anschluss (the annexation of Austria by Nazi Germany, in mid-March 1938), Fritz Löhner-Beda was arrested and deported to the Dachau concentration camp.

Wer dich verließ, der kann es erst ermessen, wie wundervoll die Freiheit ist!

The line wir wollen trotzdem Ja zum Leben sagen was adopted by the Holocaust survivor Viktor Frankl for the German title of his 1946 book Man's Search for Meaning.

The circumstances of his murder are described in Raul Hilberg's The Destruction of the European Jews: during an inspection by several directors of the IG Farben syndicate around Otto Ambros, Fritz ter Meer, Carl Krauch, and Heinrich Bütefisch, the already diseased Löhner-Beda was denounced as not working hard enough, for which he was beaten to death on 4 December 1942.