Zondek studied in Berlin and received his doctorate here 1919. Subsequently, he worked as an assistant under Karl Franz at the Charité in Berlin, where he qualified in 1923. From 1926 he was associate professor of Berlin " Friedrich -Wilhelms " University. After the government takeover of the Nazis was Zondek gem on September 5, 1933 because of his Jewish origin. § 3 of the professional civil service law dismissed from the medical school. A year Zondek worked in Stockholm at the Biochemical Institute of the University, the Hans von Euler initiated. In 1934 he went to Palestine, where he at the Hadassah Medical School, Jerusalem's Hebrew University as a university teacher and researcher worked until 1961. He died on a trip to New York.
Bernhard Zondek created in 1928 along with Selmar Aschheim the first test method for early pregnancy detection, the Aschheim- Zondek reaction.
- For the pathology of Sublimatnephrose. From the first medical university clinic of the Charité. Berlin med Diss on 28 March 1919.
- The hormones of the ovary and pituitary: Studies on the biology and clinical practice of female genital function. Springer, Berlin, 1931.
- Genital Functions and Their Hormonal regulation., 1941.