Workers' Defence Committee
After the war, Edelman remained in Poland and became a noted cardiologist. From the 1970s, he collaborated with the Workers' Defence Committee and other political groups opposing Poland's communist regime. As a member of Solidarity, he took part in the Polish Round Table Talks of 1989. Following the peaceful transformations of 1989, he was a member of various centrist and liberal parties. He also wrote books documenting the history of wartime resistance against the Nazi German occupation of Poland.